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c-typeck.c (function_types_compatible_p): Ignore incompatible 'volatile' qualifiers on a function's return type in GNU mode. 

2003-04-29  Geoffrey Keating  <geoffk@apple.com>

	* c-typeck.c (function_types_compatible_p): Ignore incompatible
	'volatile' qualifiers on a function's return type in GNU mode.

Index: testsuite/ChangeLog
2003-04-29  Geoffrey Keating  <geoffk@apple.com>

	* gcc.dg/noreturn-5.c: New file.
	* gcc.dg/noreturn-6.c: New file.

From-SVN: r66281
This commit is contained in:
Geoffrey Keating 2003-04-30 01:28:39 +00:00 committed by Geoffrey Keating
parent 9c0631a756
commit a6fdc0868e
5 changed files with 35 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-04-29 Geoffrey Keating <geoffk@apple.com>
* c-typeck.c (function_types_compatible_p): Ignore incompatible
'volatile' qualifiers on a function's return type in GNU mode.
2003-04-29 Aldy Hernandez <aldyh@redhat.com>
* expr.c (emit_group_load): Dump parallels of simd types to

18
gcc/c-typeck.c
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@ -630,9 +630,23 @@ function_types_compatible_p (f1, f2)
/* 1 if no need for warning yet, 2 if warning cause has been seen. */
int val = 1;
int val1;
tree ret1, ret2;
if (!(TREE_TYPE (f1) == TREE_TYPE (f2)
|| (val = comptypes (TREE_TYPE (f1), TREE_TYPE (f2)))))
ret1 = TREE_TYPE (f1);
ret2 = TREE_TYPE (f2);
/* 'volatile' qualifiers on a function's return type mean the function
is noreturn. */
if (pedantic && TYPE_VOLATILE (ret1) != TYPE_VOLATILE (ret2))
pedwarn ("function return types not compatible due to `volatile'");
if (TYPE_VOLATILE (ret1))
ret1 = build_qualified_type (TYPE_MAIN_VARIANT (ret1),
TYPE_QUALS (ret1) & ~TYPE_QUAL_VOLATILE);
if (TYPE_VOLATILE (ret2))
ret2 = build_qualified_type (TYPE_MAIN_VARIANT (ret2),
TYPE_QUALS (ret2) & ~TYPE_QUAL_VOLATILE);
val = comptypes (ret1, ret2);
if (val == 0)
return 0;
args1 = TYPE_ARG_TYPES (f1);

3
gcc/testsuite/ChangeLog
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@ -1,5 +1,8 @@
2003-04-29 Geoffrey Keating <geoffk@apple.com>
* gcc.dg/noreturn-5.c: New file.
* gcc.dg/noreturn-6.c: New file.
* gcc.c-torture/compile/inline-1.c: New file.
2003-04-29 Mark Mitchell <mark@codesourcery.com>

7
gcc/testsuite/gcc.dg/noreturn-5.c Normal file
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@ -0,0 +1,7 @@
/* { dg-do compile } */
/* { dg-options "-std=gnu99" } */
/* Check that 'noreturn' and 'volatile extern' are compatible.
The testsuite uses -ansi -pedantic-errors by default, so this has
to override. */
extern void xxx (int) __attribute__((noreturn));
__volatile extern void xxx (int);

4
gcc/testsuite/gcc.dg/noreturn-6.c Normal file
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@ -0,0 +1,4 @@
/* { dg-do compile } */
/* Check for volatile behaviour. */
extern int xxx (void);
volatile extern int xxx (void); /* { dg-error "not compatible" } */