overflow-warn-1.C: Fix testcase.
2007-01-08 Manuel Lopez-Ibanez <manu@gcc.gnu.org> testsuite/ * g++.dg/warn/overflow-warn-1.C: Fix testcase. * g++.dg/warn/overflow-warn-3.C: Likewise. * g++.dg/warn/overflow-warn-4.C: Likewise. * g++.dg/warn/overflow-warn-5.C: Likewise. * g++.dg/warn/overflow-warn-6.C: Likewise. * g++.dg/warn/Woverflow-1.C: Likewise. * g++.dg/warn/Woverflow-2.C: Likewise. * g++.dg/warn/Woverflow-3.C: Likewise. * g++.dg/warn/multiple-overflow-warn-2.C: Likewise. From-SVN: r120588
This commit is contained in:
Manuel López-Ibáñez
parent
b251af9792
commit
8444a5de7e
@ -1,3 +1,15 @@
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2007-01-08 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
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* g++.dg/warn/overflow-warn-1.C: Fix testcase.
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* g++.dg/warn/overflow-warn-3.C: Likewise.
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* g++.dg/warn/overflow-warn-4.C: Likewise.
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* g++.dg/warn/overflow-warn-5.C: Likewise.
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* g++.dg/warn/overflow-warn-6.C: Likewise.
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* g++.dg/warn/Woverflow-1.C: Likewise.
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* g++.dg/warn/Woverflow-2.C: Likewise.
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* g++.dg/warn/Woverflow-3.C: Likewise.
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* g++.dg/warn/multiple-overflow-warn-2.C: Likewise.
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2007-01-08 Roger Sayle <roger@eyesopen.com>
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* gfortran.dg/array_constructor_14.f90: New test case.
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@ -5,17 +5,3 @@
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int foo = INT_MAX + 1; /* { dg-warning "integer overflow" } */
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/* { dg-do compile } */
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/* { dg-options "-O2" } */
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#include <limits.h>
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int foo = INT_MAX + 1; /* { dg-warning "integer overflow" } */
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/* { dg-do compile } */
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/* { dg-options "-O2" } */
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#include <limits.h>
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int foo = INT_MAX + 1; /* { dg-warning "integer overflow" } */
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@ -5,17 +5,3 @@
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int foo = INT_MAX + 1; /* { dg-warning "integer overflow" } */
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/* { dg-do compile } */
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/* { dg-options "-O2 -Woverflow" } */
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#include <limits.h>
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int foo = INT_MAX + 1; /* { dg-warning "integer overflow" } */
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/* { dg-do compile } */
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/* { dg-options "-O2 -Woverflow" } */
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#include <limits.h>
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int foo = INT_MAX + 1; /* { dg-warning "integer overflow" } */
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@ -5,17 +5,3 @@
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int foo = INT_MAX + 1;
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/* { dg-do compile } */
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/* { dg-options "-O2 -Wno-overflow" } */
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#include <limits.h>
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int foo = INT_MAX + 1;
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/* { dg-do compile } */
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/* { dg-options "-O2 -Wno-overflow" } */
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#include <limits.h>
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int foo = INT_MAX + 1;
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@ -10,27 +10,3 @@ g1 (void)
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return INT_MAX + 1 - INT_MAX; /* { dg-bogus "integer overflow in expression.*integer overflow in expression" } */
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/* { dg-warning "integer overflow in expression" "" { target *-*-* } 10 } */
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}
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/* PR c/19978 : Test for duplicated warnings (binary operators). */
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/* { dg-do compile } */
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/* { dg-options "-Woverflow" } */
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#include <limits.h>
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int
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g1 (void)
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{
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return INT_MAX + 1 - INT_MAX; /* { dg-bogus "integer overflow in expression.*integer overflow in expression" } */
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/* { dg-warning "integer overflow in expression" "" { target *-*-* } 10 } */
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}
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/* PR c/19978 : Test for duplicated warnings (binary operators). */
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/* { dg-do compile } */
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/* { dg-options "-Woverflow" } */
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#include <limits.h>
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int
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g1 (void)
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{
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return INT_MAX + 1 - INT_MAX; /* { dg-bogus "integer overflow in expression.*integer overflow in expression" } */
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/* { dg-warning "integer overflow in expression" "" { target *-*-* } 10 } */
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}
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@ -43,251 +43,6 @@ f (void)
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static int sc = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
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// Test for overflow in null pointer constant.
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void *n = 0;
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/* The first two of these involve overflow, so are not null pointer
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constants. The third has the overflow in an unevaluated
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subexpression, so is a null pointer constant. */
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void *p = 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
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/* { dg-error "invalid conversion from 'int' to 'void" "null" { target *-*-* } 51 } */
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void *q = 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
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/* { dg-error "invalid conversion from 'int' to 'void*'" "null" { xfail *-*-* } 53 } */
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void *r = (1 ? 0 : INT_MAX+1); /* { dg-bogus "integer overflow in expression" "" { xfail *-*-* } 55 } */
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void
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g (int i)
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{
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switch (i)
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{
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case 0 * (1/0): /* { dg-warning "warning: division by zero" } */
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;
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case 1 + 0 * (INT_MAX + 1): /* { dg-warning "warning: integer overflow in expression" } */
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;
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}
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}
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int
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h (void)
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{
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return INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
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}
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int
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h1 (void)
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{
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return INT_MAX + 1 - INT_MAX; /* { dg-warning "warning: integer overflow in expression" } */
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}
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void fuc (unsigned char);
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void fsc (signed char);
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void
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h2 (void)
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{
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fsc (SCHAR_MAX + 1);
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fsc (SCHAR_MIN - 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
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fsc (UCHAR_MAX);
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fsc (UCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
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fuc (-1);
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fuc (UCHAR_MAX + 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
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fuc (SCHAR_MIN);
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fuc (SCHAR_MIN - 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
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fuc (-UCHAR_MAX); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
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}
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void fui (unsigned int);
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void fsi (signed int);
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int si;
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unsigned ui;
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void
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h2i (int x)
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{
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/* For some reason, we only give certain warnings for implicit
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conversions among values of the same precision with -Wconversion,
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while we don't give others at all. */
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fsi ((unsigned)INT_MAX + 1);
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si = (unsigned)INT_MAX + 1;
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si = x ? (unsigned)INT_MAX + 1 : 1;
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fsi ((unsigned)INT_MAX + 2);
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si = (unsigned)INT_MAX + 2;
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si = x ? (unsigned)INT_MAX + 2 : 1;
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fsi (UINT_MAX);
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si = UINT_MAX;
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fui (-1);
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ui = -1;
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ui = x ? -1 : 1U;
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fui (INT_MIN);
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ui = INT_MIN;
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ui = x ? INT_MIN : 1U;
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}
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/* Test for diagnostics for constant overflow. */
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/* Origin: Joseph Myers <joseph@codesourcery.com> */
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/* { dg-do compile } */
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/* { dg-options "" } */
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#include <limits.h>
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enum e {
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E0 = INT_MAX,
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/* Unsigned overflow wraps around. */
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E1 = UINT_MAX + 1,
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/* Overflow in an unevaluated part of an expression is OK (example
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in the standard). */
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E2 = 2 || 1 / 0, /* { dg-bogus "warning: division by zero" "" { xfail *-*-* } 14 } */
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E3 = 1 / 0, /* { dg-warning "warning: division by zero" } */
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/* { dg-error "error: enumerator value for 'E3' is not an integer constant" "enum error" { target *-*-* } 15 } */
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/* But as in DR#031, the 1/0 in an evaluated subexpression means the
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whole expression violates the constraints. */
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E4 = 0 * (1 / 0), /* { dg-warning "warning: division by zero" } */
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/* { dg-error "error: enumerator value for 'E4' is not an integer constant" "enum error" { xfail *-*-* } 19 } */
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E5 = INT_MAX + 1, /* { dg-warning "warning: integer overflow in expression" } */
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/* Again, overflow in evaluated subexpression. */
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E6 = 0 * (INT_MAX + 1), /* { dg-warning "warning: integer overflow in expression" } */
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/* A cast does not constitute overflow in conversion. */
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E7 = (char) INT_MAX
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};
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struct s {
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int a;
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int : 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
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int : 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
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};
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void
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f (void)
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{
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/* This expression is not required to be a constant expression, so
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it should just involve undefined behavior at runtime. */
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int c = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
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}
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/* But this expression does need to be constant. */
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static int sc = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
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/* The first two of these involve overflow, so are not null pointer
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constants. The third has the overflow in an unevaluated
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subexpression, so is a null pointer constant. */
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void *p = 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
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/* { dg-error "invalid conversion from 'int' to 'void" "null" { target *-*-* } 48 } */
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void *q = 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
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/* { dg-error "invalid conversion from 'int' to 'void*'" "null" { xfail *-*-* } 50 } */
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void *r = (1 ? 0 : INT_MAX+1); /* { dg-bogus "integer overflow in expression" "" { xfail *-*-* } 52 } */
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void
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g (int i)
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{
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switch (i)
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{
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case 0 * (1/0): /* { dg-warning "warning: division by zero" } */
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;
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case 1 + 0 * (INT_MAX + 1): /* { dg-warning "warning: integer overflow in expression" } */
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;
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}
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}
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int
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h (void)
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{
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return INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
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}
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int
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h1 (void)
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{
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return INT_MAX + 1 - INT_MAX; /* { dg-warning "warning: integer overflow in expression" } */
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}
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void fuc (unsigned char);
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void fsc (signed char);
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void
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h2 (void)
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{
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fsc (SCHAR_MAX + 1);
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fsc (SCHAR_MIN - 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
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fsc (UCHAR_MAX);
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fsc (UCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
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fuc (-1);
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fuc (UCHAR_MAX + 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
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fuc (SCHAR_MIN);
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fuc (SCHAR_MIN - 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
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fuc (-UCHAR_MAX); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
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}
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void fui (unsigned int);
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void fsi (signed int);
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int si;
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unsigned ui;
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void
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h2i (int x)
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{
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/* For some reason, we only give certain warnings for implicit
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conversions among values of the same precision with -Wconversion,
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while we don't give others at all. */
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fsi ((unsigned)INT_MAX + 1);
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si = (unsigned)INT_MAX + 1;
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si = x ? (unsigned)INT_MAX + 1 : 1;
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fsi ((unsigned)INT_MAX + 2);
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si = (unsigned)INT_MAX + 2;
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si = x ? (unsigned)INT_MAX + 2 : 1;
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fsi (UINT_MAX);
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si = UINT_MAX;
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fui (-1);
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ui = -1;
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ui = x ? -1 : 1U;
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fui (INT_MIN);
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ui = INT_MIN;
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ui = x ? INT_MIN : 1U;
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}
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/* Test for diagnostics for constant overflow. */
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/* Origin: Joseph Myers <joseph@codesourcery.com> */
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/* { dg-do compile } */
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/* { dg-options "" } */
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#include <limits.h>
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enum e {
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E0 = INT_MAX,
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/* Unsigned overflow wraps around. */
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E1 = UINT_MAX + 1,
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/* Overflow in an unevaluated part of an expression is OK (example
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in the standard). */
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E2 = 2 || 1 / 0, /* { dg-bogus "warning: division by zero" "" { xfail *-*-* } 14 } */
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E3 = 1 / 0, /* { dg-warning "warning: division by zero" } */
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/* { dg-error "error: enumerator value for 'E3' is not an integer constant" "enum error" { target *-*-* } 15 } */
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/* But as in DR#031, the 1/0 in an evaluated subexpression means the
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whole expression violates the constraints. */
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E4 = 0 * (1 / 0), /* { dg-warning "warning: division by zero" } */
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/* { dg-error "error: enumerator value for 'E4' is not an integer constant" "enum error" { xfail *-*-* } 19 } */
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E5 = INT_MAX + 1, /* { dg-warning "warning: integer overflow in expression" } */
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/* Again, overflow in evaluated subexpression. */
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E6 = 0 * (INT_MAX + 1), /* { dg-warning "warning: integer overflow in expression" } */
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/* A cast does not constitute overflow in conversion. */
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E7 = (char) INT_MAX
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};
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struct s {
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int a;
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int : 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
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int : 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
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};
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void
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f (void)
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{
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/* This expression is not required to be a constant expression, so
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it should just involve undefined behavior at runtime. */
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int c = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
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}
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/* This expression is neither required to be constant. */
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static int sc = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
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// Test for overflow in null pointer constant.
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void *n = 0;
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/* The first two of these involve overflow, so are not null pointer
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@ -47,264 +47,6 @@ f (void)
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static int sc = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
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// Test for overflow in null pointer constant.
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void *n = 0;
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/* The first two of these involve overflow, so are not null pointer
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constants. The third has the overflow in an unevaluated
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subexpression, so is a null pointer constant. */
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void *p = 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
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/* { dg-error "invalid conversion from 'int' to 'void" "null" { target *-*-* } 55 } */
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void *q = 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
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/* { dg-error "invalid conversion from 'int' to 'void*'" "null" { xfail *-*-* } 58 } */
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void *r = (1 ? 0 : INT_MAX+1); /* { dg-bogus "integer overflow in expression" "" { xfail *-*-* } 60 } */
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void
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g (int i)
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{
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switch (i)
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{
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case 0 * (1/0): /* { dg-warning "warning: division by zero" } */
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;
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case 1 + 0 * (INT_MAX + 1): /* { dg-warning "warning: integer overflow in expression" } */
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/* { dg-warning "warning: overflow in constant expression" "constant" { target *-*-* } 69 } */
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;
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}
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}
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int
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h (void)
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{
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return INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
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}
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int
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h1 (void)
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{
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return INT_MAX + 1 - INT_MAX; /* { dg-warning "warning: integer overflow in expression" } */
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}
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void fuc (unsigned char);
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void fsc (signed char);
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void
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h2 (void)
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{
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fsc (SCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
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fsc (SCHAR_MIN - 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
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fsc (UCHAR_MAX); /* { dg-warning "warning: overflow in implicit constant conversion" } */
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fsc (UCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
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fuc (-1);
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fuc (UCHAR_MAX + 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
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fuc (SCHAR_MIN);
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fuc (SCHAR_MIN - 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
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fuc (-UCHAR_MAX); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
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}
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void fui (unsigned int);
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void fsi (signed int);
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int si;
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unsigned ui;
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void
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h2i (int x)
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{
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/* For some reason, we only give certain warnings for implicit
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conversions among values of the same precision with -Wconversion,
|
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while we don't give others at all. */
|
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fsi ((unsigned)INT_MAX + 1);
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si = (unsigned)INT_MAX + 1;
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si = x ? (unsigned)INT_MAX + 1 : 1;
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fsi ((unsigned)INT_MAX + 2);
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si = (unsigned)INT_MAX + 2;
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si = x ? (unsigned)INT_MAX + 2 : 1;
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fsi (UINT_MAX);
|
||||
si = UINT_MAX;
|
||||
fui (-1);
|
||||
ui = -1;
|
||||
ui = x ? -1 : 1U;
|
||||
fui (INT_MIN);
|
||||
ui = INT_MIN;
|
||||
ui = x ? INT_MIN : 1U;
|
||||
}
|
||||
/* Test for diagnostics for constant overflow. Test with -pedantic. */
|
||||
/* Origin: Joseph Myers <joseph@codesourcery.com> */
|
||||
/* { dg-do compile } */
|
||||
/* { dg-options "-fpermissive -pedantic" } */
|
||||
|
||||
#include <limits.h>
|
||||
|
||||
enum e {
|
||||
E0 = INT_MAX,
|
||||
/* Unsigned overflow wraps around. */
|
||||
E1 = UINT_MAX + 1,
|
||||
/* Overflow in an unevaluated part of an expression is OK (example
|
||||
in the standard). */
|
||||
E2 = 2 || 1 / 0, /* { dg-bogus "warning: division by zero" "" { xfail *-*-* } 14 } */
|
||||
E3 = 1 / 0, /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "error: enumerator value for 'E3' is not an integer constant" "enum error" { target *-*-* } 15 } */
|
||||
/* But as in DR#031, the 1/0 in an evaluated subexpression means the
|
||||
whole expression violates the constraints. */
|
||||
E4 = 0 * (1 / 0), /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "error: enumerator value for 'E4' is not an integer constant" "enum error" { xfail *-*-* } 19 } */
|
||||
E5 = INT_MAX + 1, /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-warning "warning: overflow in constant expression" "constant" { target *-*-* } 21 } */
|
||||
/* Again, overflow in evaluated subexpression. */
|
||||
E6 = 0 * (INT_MAX + 1), /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-warning "warning: overflow in constant expression" "constant" { target *-*-* } 24 } */
|
||||
/* A cast does not constitute overflow in conversion. */
|
||||
E7 = (char) INT_MAX
|
||||
};
|
||||
|
||||
struct s {
|
||||
int a;
|
||||
int : 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
|
||||
int : 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-warning "warning: overflow in constant expression" "constant" { target *-*-* } 33 } */
|
||||
};
|
||||
|
||||
void
|
||||
f (void)
|
||||
{
|
||||
/* This expression is not required to be a constant expression, so
|
||||
it should just involve undefined behavior at runtime. */
|
||||
int c = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
|
||||
}
|
||||
|
||||
/* But this expression does need to be constant (in C++ ???). */
|
||||
static int sc = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-warning "warning: overflow in constant expression" "constant" { xfail *-*-* } 47 } */
|
||||
|
||||
/* The first two of these involve overflow, so are not null pointer
|
||||
constants. The third has the overflow in an unevaluated
|
||||
subexpression, so is a null pointer constant. */
|
||||
void *p = 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "invalid conversion from 'int' to 'void" "null" { target *-*-* } 53 } */
|
||||
|
||||
void *q = 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "invalid conversion from 'int' to 'void*'" "null" { xfail *-*-* } 56 } */
|
||||
void *r = (1 ? 0 : INT_MAX+1); /* { dg-bogus "integer overflow in expression" "" { xfail *-*-* } 58 } */
|
||||
|
||||
void
|
||||
g (int i)
|
||||
{
|
||||
switch (i)
|
||||
{
|
||||
case 0 * (1/0): /* { dg-warning "warning: division by zero" } */
|
||||
;
|
||||
case 1 + 0 * (INT_MAX + 1): /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-warning "warning: overflow in constant expression" "constant" { target *-*-* } 67 } */
|
||||
;
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
h (void)
|
||||
{
|
||||
return INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
int
|
||||
h1 (void)
|
||||
{
|
||||
return INT_MAX + 1 - INT_MAX; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
void fuc (unsigned char);
|
||||
void fsc (signed char);
|
||||
|
||||
void
|
||||
h2 (void)
|
||||
{
|
||||
fsc (SCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fsc (SCHAR_MIN - 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fsc (UCHAR_MAX); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fsc (UCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fuc (-1);
|
||||
fuc (UCHAR_MAX + 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
|
||||
fuc (SCHAR_MIN);
|
||||
fuc (SCHAR_MIN - 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
|
||||
fuc (-UCHAR_MAX); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
|
||||
}
|
||||
|
||||
void fui (unsigned int);
|
||||
void fsi (signed int);
|
||||
|
||||
int si;
|
||||
unsigned ui;
|
||||
|
||||
void
|
||||
h2i (int x)
|
||||
{
|
||||
/* For some reason, we only give certain warnings for implicit
|
||||
conversions among values of the same precision with -Wconversion,
|
||||
while we don't give others at all. */
|
||||
fsi ((unsigned)INT_MAX + 1);
|
||||
si = (unsigned)INT_MAX + 1;
|
||||
si = x ? (unsigned)INT_MAX + 1 : 1;
|
||||
fsi ((unsigned)INT_MAX + 2);
|
||||
si = (unsigned)INT_MAX + 2;
|
||||
si = x ? (unsigned)INT_MAX + 2 : 1;
|
||||
fsi (UINT_MAX);
|
||||
si = UINT_MAX;
|
||||
fui (-1);
|
||||
ui = -1;
|
||||
ui = x ? -1 : 1U;
|
||||
fui (INT_MIN);
|
||||
ui = INT_MIN;
|
||||
ui = x ? INT_MIN : 1U;
|
||||
}
|
||||
/* Test for diagnostics for constant overflow. Test with -pedantic. */
|
||||
/* Origin: Joseph Myers <joseph@codesourcery.com> */
|
||||
/* { dg-do compile } */
|
||||
/* { dg-options "-fpermissive -pedantic" } */
|
||||
|
||||
#include <limits.h>
|
||||
|
||||
enum e {
|
||||
E0 = INT_MAX,
|
||||
/* Unsigned overflow wraps around. */
|
||||
E1 = UINT_MAX + 1,
|
||||
/* Overflow in an unevaluated part of an expression is OK (example
|
||||
in the standard). */
|
||||
E2 = 2 || 1 / 0, /* { dg-bogus "warning: division by zero" "" { xfail *-*-* } 14 } */
|
||||
E3 = 1 / 0, /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "error: enumerator value for 'E3' is not an integer constant" "enum error" { target *-*-* } 15 } */
|
||||
/* But as in DR#031, the 1/0 in an evaluated subexpression means the
|
||||
whole expression violates the constraints. */
|
||||
E4 = 0 * (1 / 0), /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "error: enumerator value for 'E4' is not an integer constant" "enum error" { xfail *-*-* } 19 } */
|
||||
E5 = INT_MAX + 1, /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-warning "warning: overflow in constant expression" "constant" { target *-*-* } 21 } */
|
||||
/* Again, overflow in evaluated subexpression. */
|
||||
E6 = 0 * (INT_MAX + 1), /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-warning "warning: overflow in constant expression" "constant" { target *-*-* } 24 } */
|
||||
/* A cast does not constitute overflow in conversion. */
|
||||
E7 = (char) INT_MAX
|
||||
};
|
||||
|
||||
struct s {
|
||||
int a;
|
||||
int : 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
|
||||
int : 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-warning "warning: overflow in constant expression" "constant" { target *-*-* } 33 } */
|
||||
};
|
||||
|
||||
void
|
||||
f (void)
|
||||
{
|
||||
/* This expression is not required to be a constant expression, so
|
||||
it should just involve undefined behavior at runtime. */
|
||||
int c = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
|
||||
}
|
||||
|
||||
/* This expression is neither required to be constant. */
|
||||
static int sc = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
|
||||
|
||||
// Test for overflow in null pointer constant.
|
||||
void *n = 0;
|
||||
/* The first two of these involve overflow, so are not null pointer
|
||||
|
||||
@ -47,264 +47,6 @@ f (void)
|
||||
static int sc = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
|
||||
|
||||
// Test for overflow in null pointer constant.
|
||||
void *n = 0;
|
||||
/* The first two of these involve overflow, so are not null pointer
|
||||
constants. The third has the overflow in an unevaluated
|
||||
subexpression, so is a null pointer constant. */
|
||||
void *p = 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "invalid conversion from 'int' to 'void" "null" { target *-*-* } 55 } */
|
||||
|
||||
void *q = 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "invalid conversion from 'int' to 'void*'" "null" { xfail *-*-* } 58 } */
|
||||
void *r = (1 ? 0 : INT_MAX+1); /* { dg-bogus "integer overflow in expression" "" { xfail *-*-* } 60 } */
|
||||
|
||||
void
|
||||
g (int i)
|
||||
{
|
||||
switch (i)
|
||||
{
|
||||
case 0 * (1/0): /* { dg-warning "warning: division by zero" } */
|
||||
;
|
||||
case 1 + 0 * (INT_MAX + 1): /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "error: overflow in constant expression" "constant" { target *-*-* } 69 } */
|
||||
;
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
h (void)
|
||||
{
|
||||
return INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
int
|
||||
h1 (void)
|
||||
{
|
||||
return INT_MAX + 1 - INT_MAX; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
void fuc (unsigned char);
|
||||
void fsc (signed char);
|
||||
|
||||
void
|
||||
h2 (void)
|
||||
{
|
||||
fsc (SCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fsc (SCHAR_MIN - 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fsc (UCHAR_MAX); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fsc (UCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fuc (-1);
|
||||
fuc (UCHAR_MAX + 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
|
||||
fuc (SCHAR_MIN);
|
||||
fuc (SCHAR_MIN - 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
|
||||
fuc (-UCHAR_MAX); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
|
||||
}
|
||||
|
||||
void fui (unsigned int);
|
||||
void fsi (signed int);
|
||||
|
||||
int si;
|
||||
unsigned ui;
|
||||
|
||||
void
|
||||
h2i (int x)
|
||||
{
|
||||
/* For some reason, we only give certain warnings for implicit
|
||||
conversions among values of the same precision with -Wconversion,
|
||||
while we don't give others at all. */
|
||||
fsi ((unsigned)INT_MAX + 1);
|
||||
si = (unsigned)INT_MAX + 1;
|
||||
si = x ? (unsigned)INT_MAX + 1 : 1;
|
||||
fsi ((unsigned)INT_MAX + 2);
|
||||
si = (unsigned)INT_MAX + 2;
|
||||
si = x ? (unsigned)INT_MAX + 2 : 1;
|
||||
fsi (UINT_MAX);
|
||||
si = UINT_MAX;
|
||||
fui (-1);
|
||||
ui = -1;
|
||||
ui = x ? -1 : 1U;
|
||||
fui (INT_MIN);
|
||||
ui = INT_MIN;
|
||||
ui = x ? INT_MIN : 1U;
|
||||
}
|
||||
/* Test for diagnostics for constant overflow. Test with -pedantic-errors. */
|
||||
/* Origin: Joseph Myers <joseph@codesourcery.com> */
|
||||
/* { dg-do compile } */
|
||||
/* { dg-options "-pedantic-errors" } */
|
||||
|
||||
#include <limits.h>
|
||||
|
||||
enum e {
|
||||
E0 = INT_MAX,
|
||||
/* Unsigned overflow wraps around. */
|
||||
E1 = UINT_MAX + 1,
|
||||
/* Overflow in an unevaluated part of an expression is OK (example
|
||||
in the standard). */
|
||||
E2 = 2 || 1 / 0, /* { dg-bogus "warning: division by zero" "" { xfail *-*-* } 14 } */
|
||||
E3 = 1 / 0, /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "error: enumerator value for 'E3' is not an integer constant" "enum error" { target *-*-* } 15 } */
|
||||
/* But as in DR#031, the 1/0 in an evaluated subexpression means the
|
||||
whole expression violates the constraints. */
|
||||
E4 = 0 * (1 / 0), /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "error: enumerator value for 'E4' is not an integer constant" "enum error" { xfail *-*-* } 19 } */
|
||||
E5 = INT_MAX + 1, /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "error: overflow in constant expression" "constant" { target *-*-* } 21 } */
|
||||
/* Again, overflow in evaluated subexpression. */
|
||||
E6 = 0 * (INT_MAX + 1), /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "error: overflow in constant expression" "constant" { target *-*-* } 24 } */
|
||||
/* A cast does not constitute overflow in conversion. */
|
||||
E7 = (char) INT_MAX
|
||||
};
|
||||
|
||||
struct s {
|
||||
int a;
|
||||
int : 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
|
||||
int : 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "error: overflow in constant expression" "constant" { target *-*-* } 33 } */
|
||||
};
|
||||
|
||||
void
|
||||
f (void)
|
||||
{
|
||||
/* This expression is not required to be a constant expression, so
|
||||
it should just involve undefined behavior at runtime. */
|
||||
int c = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
|
||||
}
|
||||
|
||||
/* But this expression does need to be constant (in C++ ???). */
|
||||
static int sc = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "error: overflow in constant expression" "constant" { xfail *-*-* } 47 } */
|
||||
|
||||
/* The first two of these involve overflow, so are not null pointer
|
||||
constants. The third has the overflow in an unevaluated
|
||||
subexpression, so is a null pointer constant. */
|
||||
void *p = 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "invalid conversion from 'int' to 'void" "null" { target *-*-* } 53 } */
|
||||
|
||||
void *q = 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "invalid conversion from 'int' to 'void*'" "null" { xfail *-*-* } 56 } */
|
||||
void *r = (1 ? 0 : INT_MAX+1); /* { dg-bogus "integer overflow in expression" "" { xfail *-*-* } 58 } */
|
||||
|
||||
void
|
||||
g (int i)
|
||||
{
|
||||
switch (i)
|
||||
{
|
||||
case 0 * (1/0): /* { dg-warning "warning: division by zero" } */
|
||||
;
|
||||
case 1 + 0 * (INT_MAX + 1): /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "error: overflow in constant expression" "constant" { target *-*-* } 67 } */
|
||||
;
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
h (void)
|
||||
{
|
||||
return INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
int
|
||||
h1 (void)
|
||||
{
|
||||
return INT_MAX + 1 - INT_MAX; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
void fuc (unsigned char);
|
||||
void fsc (signed char);
|
||||
|
||||
void
|
||||
h2 (void)
|
||||
{
|
||||
fsc (SCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fsc (SCHAR_MIN - 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fsc (UCHAR_MAX); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fsc (UCHAR_MAX + 1); /* { dg-warning "warning: overflow in implicit constant conversion" } */
|
||||
fuc (-1);
|
||||
fuc (UCHAR_MAX + 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
|
||||
fuc (SCHAR_MIN);
|
||||
fuc (SCHAR_MIN - 1); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
|
||||
fuc (-UCHAR_MAX); /* { dg-warning "warning: large integer implicitly truncated to unsigned type" } */
|
||||
}
|
||||
|
||||
void fui (unsigned int);
|
||||
void fsi (signed int);
|
||||
|
||||
int si;
|
||||
unsigned ui;
|
||||
|
||||
void
|
||||
h2i (int x)
|
||||
{
|
||||
/* For some reason, we only give certain warnings for implicit
|
||||
conversions among values of the same precision with -Wconversion,
|
||||
while we don't give others at all. */
|
||||
fsi ((unsigned)INT_MAX + 1);
|
||||
si = (unsigned)INT_MAX + 1;
|
||||
si = x ? (unsigned)INT_MAX + 1 : 1;
|
||||
fsi ((unsigned)INT_MAX + 2);
|
||||
si = (unsigned)INT_MAX + 2;
|
||||
si = x ? (unsigned)INT_MAX + 2 : 1;
|
||||
fsi (UINT_MAX);
|
||||
si = UINT_MAX;
|
||||
fui (-1);
|
||||
ui = -1;
|
||||
ui = x ? -1 : 1U;
|
||||
fui (INT_MIN);
|
||||
ui = INT_MIN;
|
||||
ui = x ? INT_MIN : 1U;
|
||||
}
|
||||
/* Test for diagnostics for constant overflow. Test with -pedantic-errors. */
|
||||
/* Origin: Joseph Myers <joseph@codesourcery.com> */
|
||||
/* { dg-do compile } */
|
||||
/* { dg-options "-pedantic-errors" } */
|
||||
|
||||
#include <limits.h>
|
||||
|
||||
enum e {
|
||||
E0 = INT_MAX,
|
||||
/* Unsigned overflow wraps around. */
|
||||
E1 = UINT_MAX + 1,
|
||||
/* Overflow in an unevaluated part of an expression is OK (example
|
||||
in the standard). */
|
||||
E2 = 2 || 1 / 0, /* { dg-bogus "warning: division by zero" "" { xfail *-*-* } 14 } */
|
||||
E3 = 1 / 0, /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "error: enumerator value for 'E3' is not an integer constant" "enum error" { target *-*-* } 15 } */
|
||||
/* But as in DR#031, the 1/0 in an evaluated subexpression means the
|
||||
whole expression violates the constraints. */
|
||||
E4 = 0 * (1 / 0), /* { dg-warning "warning: division by zero" } */
|
||||
/* { dg-error "error: enumerator value for 'E4' is not an integer constant" "enum error" { xfail *-*-* } 19 } */
|
||||
E5 = INT_MAX + 1, /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "error: overflow in constant expression" "constant" { target *-*-* } 21 } */
|
||||
/* Again, overflow in evaluated subexpression. */
|
||||
E6 = 0 * (INT_MAX + 1), /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "error: overflow in constant expression" "constant" { target *-*-* } 24 } */
|
||||
/* A cast does not constitute overflow in conversion. */
|
||||
E7 = (char) INT_MAX
|
||||
};
|
||||
|
||||
struct s {
|
||||
int a;
|
||||
int : 0 * (1 / 0); /* { dg-warning "warning: division by zero" } */
|
||||
int : 0 * (INT_MAX + 1); /* { dg-warning "warning: integer overflow in expression" } */
|
||||
/* { dg-error "error: overflow in constant expression" "constant" { target *-*-* } 33 } */
|
||||
};
|
||||
|
||||
void
|
||||
f (void)
|
||||
{
|
||||
/* This expression is not required to be a constant expression, so
|
||||
it should just involve undefined behavior at runtime. */
|
||||
int c = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
|
||||
}
|
||||
|
||||
/* This expression is neither required to be constant. */
|
||||
static int sc = INT_MAX + 1; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
|
||||
|
||||
// Test for overflow in null pointer constant.
|
||||
void *n = 0;
|
||||
/* The first two of these involve overflow, so are not null pointer
|
||||
|
||||
@ -5,17 +5,3 @@
|
||||
unsigned char rx_async(unsigned char p) {
|
||||
return p & 512; /* { dg-warning "overflow in implicit constant conversion" } */
|
||||
}
|
||||
/* PR c/27273 */
|
||||
/* { dg-do compile } */
|
||||
/* { dg-options "-Woverflow" } */
|
||||
|
||||
unsigned char rx_async(unsigned char p) {
|
||||
return p & 512; /* { dg-warning "overflow in implicit constant conversion" } */
|
||||
}
|
||||
/* PR c/27273 */
|
||||
/* { dg-do compile } */
|
||||
/* { dg-options "-Woverflow" } */
|
||||
|
||||
unsigned char rx_async(unsigned char p) {
|
||||
return p & 512; /* { dg-warning "overflow in implicit constant conversion" } */
|
||||
}
|
||||
|
||||
@ -16,39 +16,3 @@ h2 (int x)
|
||||
return ((INT_MAX + 1) * 0) * x; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
/* Test non-constant operands in overflowed expressions. */
|
||||
/* { dg-do compile } */
|
||||
/* { dg-options "-Woverflow" } */
|
||||
|
||||
#include <limits.h>
|
||||
|
||||
int
|
||||
h1 (int x)
|
||||
{
|
||||
return x * (0 * (INT_MAX + 1)); /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
int
|
||||
h2 (int x)
|
||||
{
|
||||
return ((INT_MAX + 1) * 0) * x; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
/* Test non-constant operands in overflowed expressions. */
|
||||
/* { dg-do compile } */
|
||||
/* { dg-options "-Woverflow" } */
|
||||
|
||||
#include <limits.h>
|
||||
|
||||
int
|
||||
h1 (int x)
|
||||
{
|
||||
return x * (0 * (INT_MAX + 1)); /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
int
|
||||
h2 (int x)
|
||||
{
|
||||
return ((INT_MAX + 1) * 0) * x; /* { dg-warning "warning: integer overflow in expression" } */
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user