363 lines
14 KiB
C
363 lines
14 KiB
C
/* PR tree-optimization/86552 - missing warning for reading past the end
|
|
of non-string arrays
|
|
{ dg-do compile }
|
|
{ dg-options "-O2 -Wall -ftrack-macro-expansion=0" } */
|
|
|
|
typedef __SIZE_TYPE__ size_t;
|
|
extern size_t strnlen (const char*, size_t);
|
|
|
|
const char a[5] = "12345"; /* { dg-message "declared here" } */
|
|
enum { asz = sizeof a };
|
|
|
|
int v0 = 0;
|
|
int v1 = 1;
|
|
|
|
void sink (int, ...);
|
|
|
|
#define CONCAT(a, b) a ## b
|
|
#define CAT(a, b) CONCAT(a, b)
|
|
|
|
#define T(str, n) \
|
|
__attribute__ ((noipa)) \
|
|
void CAT (test_, __LINE__) (void) { \
|
|
int i0 = 0, i1 = i0 + 1, i2 = i1 + 1, i3 = i2 + 1; \
|
|
sink (strnlen (str, n), i0, i1, i2, i3); \
|
|
} typedef void dummy_type
|
|
|
|
T (a, asz);
|
|
T (a, asz - 1);
|
|
T (a, asz - 2);
|
|
T (a, asz - 5);
|
|
T (&a[0], asz);
|
|
T (&a[0] + 1, asz); /* { dg-warning "specified bound 5 exceeds the size 4 of unterminated array" } */
|
|
T (&a[1], asz); /* { dg-warning "specified bound 5 exceeds the size 4 of unterminated array" } */
|
|
T (&a[1], asz - 1);
|
|
T (&a[v0], asz); /* { dg-warning "specified bound 5 may exceed the size of at most 5 of unterminated array" } */
|
|
T (&a[v0] + 1, asz); /* { dg-warning "specified bound 5 may exceed the size of at most 5 of unterminated array" } */
|
|
|
|
T (a, asz + 1); /* { dg-warning "specified bound 6 exceeds the size 5 of unterminated array" } */
|
|
T (&a[0], asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&a[0] + 1, asz - 1);
|
|
T (&a[0] + 1, asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&a[1], asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&a[v0], asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&a[v0] + 1, asz + 1); /* { dg-warning "unterminated" } */
|
|
|
|
|
|
const char b[][5] = { /* { dg-message "declared here" } */
|
|
"12", "123", "1234", "54321"
|
|
};
|
|
enum { bsz = sizeof b[0] };
|
|
|
|
T (b[0], bsz);
|
|
T (b[1], bsz);
|
|
T (b[2], bsz);
|
|
T (b[3], bsz);
|
|
|
|
T (b[0], bsz - 1);
|
|
T (b[1], bsz - 1);
|
|
T (b[2], bsz - 1);
|
|
T (b[3], bsz - 1);
|
|
|
|
T (b[0], bsz + 1);
|
|
T (b[1], bsz + 1);
|
|
T (b[2], bsz + 1);
|
|
T (b[3], bsz + 1); /* { dg-warning "unterminated" } */
|
|
|
|
T (b[i0], bsz);
|
|
T (b[i1], bsz);
|
|
T (b[i2], bsz);
|
|
T (b[i3], bsz);
|
|
|
|
T (b[i0], bsz + 1);
|
|
T (b[i1], bsz + 1);
|
|
T (b[i2], bsz + 1);
|
|
T (b[i3], bsz + 1); /* { dg-warning "unterminated" } */
|
|
|
|
T (b[v0], bsz);
|
|
T (b[v0], bsz + 1);
|
|
|
|
T (&b[i2][i1], bsz);
|
|
T (&b[i2][i1] + i1, bsz);
|
|
T (&b[i2][v0], bsz);
|
|
T (&b[i2][i1] + v0, bsz);
|
|
|
|
T (&b[i2][i1], bsz + 1);
|
|
T (&b[i2][i1] + i1, bsz + 1);
|
|
T (&b[i2][v0], bsz + 1);
|
|
T (&b[i2][i1] + v0, bsz + 1);
|
|
|
|
T (&b[2][1], bsz);
|
|
T (&b[2][1] + i1, bsz);
|
|
T (&b[2][i0], bsz);
|
|
T (&b[2][1] + i0, bsz);
|
|
T (&b[2][1] + v0, bsz);
|
|
T (&b[2][v0], bsz);
|
|
|
|
T (&b[2][1], bsz + 1);
|
|
T (&b[2][1] + i1, bsz + 1);
|
|
T (&b[2][i0], bsz + 1);
|
|
T (&b[2][1] + i0, bsz + 1);
|
|
T (&b[2][1] + v0, bsz + 1);
|
|
T (&b[2][v0], bsz + 1);
|
|
|
|
T (&b[3][1], bsz); /* { dg-warning "unterminated" } */
|
|
T (&b[3][1], bsz - 1);
|
|
T (&b[3][1] + 1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&b[3][1] + 1, bsz - 1); /* { dg-warning "unterminated" } */
|
|
T (&b[3][1] + 1, bsz - 2);
|
|
T (&b[3][1] + i1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&b[3][1] + i1, bsz - i1); /* { dg-warning "unterminated" } */
|
|
T (&b[3][1] + i1, bsz - i2);
|
|
T (&b[3][v0], bsz);
|
|
T (&b[3][1] + v0, bsz); /* { dg-warning "specified bound 5 exceeds the size of at most 4 of unterminated array" } */
|
|
T (&b[3][v0] + v1, bsz); /* { dg-warning "specified bound 5 may exceed the size of at most 4 of unterminated array" "pr?????" { xfail *-*-* } } */
|
|
|
|
T (&b[3][1], bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&b[3][1] + 1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&b[3][1] + i1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&b[3][v0], bsz + 1); /* { dg-warning "unterminated" "pr86936" { xfail *-*-* } } */
|
|
T (&b[3][1] + v0, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&b[3][v0] + v1, bsz + 1); /* { dg-warning "unterminated" "pr86936" { xfail *-*-* } } */
|
|
|
|
T (&b[i3][i1], bsz); /* { dg-warning "unterminated" } */
|
|
T (&b[i3][i1] + 1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&b[i3][i1] + i1, bsz); /* { dg-warning "specified bound 5 exceeds the size 3 of unterminated array" } */
|
|
T (&b[i3][v0], bsz);
|
|
T (&b[i3][i1] + v0, bsz); /* { dg-warning "specified bound 5 exceeds the size of at most 4 of unterminated array" } */
|
|
T (&b[i3][v0] + v1, bsz);
|
|
|
|
T (&b[i3][i1], bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&b[i3][i1] + 1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&b[i3][i1] + i1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&b[i3][v0], bsz + 1); /* { dg-warning "unterminated" "pr86919" { xfail *-*-* } } */
|
|
T (&b[i3][i1] + v0, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&b[i3][v0] + v1, bsz + 1); /* { dg-warning "unterminated" "pr86919" { xfail *-*-* } } */
|
|
|
|
T (v0 ? "" : b[0], bsz);
|
|
T (v0 ? "" : b[1], bsz);
|
|
T (v0 ? "" : b[2], bsz);
|
|
T (v0 ? "" : b[3], bsz);
|
|
T (v0 ? b[0] : "", bsz);
|
|
T (v0 ? b[1] : "", bsz);
|
|
T (v0 ? b[2] : "", bsz);
|
|
T (v0 ? b[3] : "", bsz);
|
|
|
|
/* Warning for the calls below would be strictly correct even though
|
|
the strnlen calls are safe because the reads are bounded by
|
|
the length of the constant arguments. Most of the calls are
|
|
not diagnosed anymore as a result of the fix for PR 103215. */
|
|
T (v0 ? "" : b[0], bsz + 1); /* { dg-warning "bound 6 exceeds source size 5" } */
|
|
T (v0 ? "" : b[1], bsz + 1);
|
|
T (v0 ? "" : b[2], bsz + 1);
|
|
T (v0 ? "" : b[3], bsz + 1);
|
|
T (v0 ? b[0] : "", bsz + 1); /* { dg-warning "bound 6 exceeds source size 5" } */
|
|
T (v0 ? b[1] : "", bsz + 1);
|
|
T (v0 ? b[2] : "", bsz + 1);
|
|
T (v0 ? b[3] : "", bsz + 1);
|
|
|
|
T (v0 ? "" : b[i0], bsz);
|
|
T (v0 ? "" : b[i1], bsz);
|
|
T (v0 ? "" : b[i2], bsz);
|
|
T (v0 ? "" : b[i3], bsz);
|
|
T (v0 ? b[i0] : "", bsz);
|
|
T (v0 ? b[i1] : "", bsz);
|
|
T (v0 ? b[i2] : "", bsz);
|
|
T (v0 ? b[i3] : "", bsz);
|
|
|
|
T (v0 ? "" : b[i0], bsz + 1);
|
|
T (v0 ? "" : b[i1], bsz + 1);
|
|
T (v0 ? "" : b[i2], bsz + 1);
|
|
T (v0 ? "" : b[i3], bsz + 1);
|
|
T (v0 ? b[i0] : "", bsz + 1);
|
|
T (v0 ? b[i1] : "", bsz + 1);
|
|
T (v0 ? b[i2] : "", bsz + 1);
|
|
T (v0 ? b[i3] : "", bsz + 1);
|
|
|
|
T (v0 ? "1234" : b[3], bsz);
|
|
T (v0 ? "1234" : b[i3], bsz);
|
|
T (v0 ? b[3] : "1234", bsz);
|
|
T (v0 ? b[i3] : "1234", bsz);
|
|
|
|
T (v0 ? a : b[3], bsz);
|
|
T (v0 ? b[0] : b[2], bsz);
|
|
T (v0 ? b[2] : b[3], bsz);
|
|
T (v0 ? b[3] : b[2], bsz);
|
|
|
|
T (v0 ? "1234" : b[3], bsz + 1);
|
|
T (v0 ? "1234" : b[i3], bsz + 1);
|
|
T (v0 ? b[3] : "1234", bsz + 1);
|
|
T (v0 ? b[i3] : "1234", bsz + 1);
|
|
|
|
/* That the following are not diagnosed is a bug/limitation resulting from
|
|
the fix for PR 103215. */
|
|
T (v0 ? a : b[3], bsz + 1); /* { dg-warning "bound 6 exceeds source size 5" "pr103215" { xfail *-*-* } } */
|
|
T (v0 ? b[0] : b[2], bsz + 1); /* { dg-warning "bound 6 exceeds source size 5" "pr103215" { xfail *-*-* } } */
|
|
T (v0 ? b[2] : b[3], bsz + 1); /* { dg-warning "bound 6 exceeds source size 5" "pr103215" { xfail *-*-* } } */
|
|
T (v0 ? b[3] : b[2], bsz + 1); /* { dg-warning "bound 6 exceeds source size 5" "pr103215" { xfail *-*-* } } */
|
|
|
|
struct A { char a[5], b[5]; };
|
|
|
|
const struct A s = { "1234", "12345" };
|
|
|
|
T (s.a, asz);
|
|
T (&s.a[0], asz);
|
|
T (&s.a[0] + 1, asz);
|
|
T (&s.a[0] + v0, asz);
|
|
T (&s.a[1], asz);
|
|
T (&s.a[1] + 1, asz);
|
|
T (&s.a[1] + v0, asz);
|
|
|
|
T (&s.a[i0], asz);
|
|
T (&s.a[i0] + i1, asz);
|
|
T (&s.a[i0] + v0, asz);
|
|
T (&s.a[i1], asz);
|
|
T (&s.a[i1] + i1, asz);
|
|
T (&s.a[i1] + v0, asz);
|
|
|
|
T (s.a, asz + 1);
|
|
T (&s.a[0], asz + 1);
|
|
T (&s.a[0] + 1, asz + 1);
|
|
T (&s.a[0] + v0, asz + 1); /* { dg-warning "specified bound 6 exceeds source size 5 " } */
|
|
T (&s.a[1], asz + 1);
|
|
T (&s.a[1] + 1, asz + 1);
|
|
T (&s.a[1] + v0, asz + 1); /* { dg-bogus "specified bound 6 exceeds source size 5" "pr95794" { xfail *-*-* } } */
|
|
|
|
T (&s.a[i0], asz + 1);
|
|
T (&s.a[i0] + i1, asz + 1);
|
|
T (&s.a[i0] + v0, asz + 1);
|
|
T (&s.a[i1], asz + 1);
|
|
T (&s.a[i1] + i1, asz + 1);
|
|
T (&s.a[i1] + v0, asz + 1);
|
|
|
|
T (s.b, bsz);
|
|
T (&s.b[0], bsz);
|
|
T (&s.b[0] + 1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&s.b[0] + v0, bsz); /* { dg-warning "unterminated" } */
|
|
T (&s.b[1], bsz); /* { dg-warning "unterminated" } */
|
|
T (&s.b[1] + 1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&s.b[1] + v0, bsz); /* { dg-warning "unterminated" } */
|
|
|
|
T (&s.b[i0], bsz);
|
|
T (&s.b[i0] + i1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&s.b[i0] + v0, bsz); /* { dg-warning "unterminated" } */
|
|
T (&s.b[i1], bsz); /* { dg-warning "unterminated" } */
|
|
T (&s.b[i1] + i1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&s.b[i1] + v0, bsz); /* { dg-warning "unterminated" } */
|
|
|
|
T (s.b, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[0], bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[0] + 1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[0] + v0, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[1], bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[1] + 1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[1] + v0, bsz + 1); /* { dg-warning "unterminated" } */
|
|
|
|
T (&s.b[i0], bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[i0] + i1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[i0] + v0, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[i1], bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[i1] + i1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&s.b[i1] + v0, bsz + 1); /* { dg-warning "unterminated" } */
|
|
|
|
struct B { struct A a[2]; };
|
|
|
|
const struct B ba[] = {
|
|
{ { { "123", "12345" }, { "12345", "123" } } },
|
|
{ { { "12345", "123" }, { "123", "12345" } } },
|
|
{ { { "1", "12" }, { "123", "1234" } } },
|
|
{ { { "123", "1234" }, { "12345", "12" } } }
|
|
};
|
|
|
|
T (ba[0].a[0].a, asz + 1);
|
|
T (&ba[0].a[0].a[0], asz + 1);
|
|
T (&ba[0].a[0].a[0] + 1, asz + 1);
|
|
T (&ba[0].a[0].a[0] + v0, asz + 1); /* { dg-bogus "specified bound 6 exceeds source size 5" pr95794" { xfail *-*-* } } */
|
|
T (&ba[0].a[0].a[1], asz + 1);
|
|
T (&ba[0].a[0].a[1] + 1, asz + 1);
|
|
T (&ba[0].a[0].a[1] + v0, asz + 1); /* { dg-bogus "specified bound 6 exceeds source size 5" pr95794" { xfail *-*-* } } */
|
|
|
|
T (ba[0].a[0].b, bsz);
|
|
T (&ba[0].a[0].b[0], bsz);
|
|
T (&ba[0].a[0].b[0] + 1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[0] + 1, bsz - 1);
|
|
T (&ba[0].a[0].b[0] + v0, bsz); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[1], bsz); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[1], bsz - 1);
|
|
T (&ba[0].a[0].b[1] + 1, bsz - 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[1] + 1, bsz - 2);
|
|
T (&ba[0].a[0].b[1] + 1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[1] + v0, bsz); /* { dg-warning "unterminated" } */
|
|
|
|
T (ba[0].a[0].b, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[0], bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[0] + 1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[0] + v0, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[1], bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[1] + 1, bsz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[0].b[1] + v0, bsz + 1); /* { dg-warning "unterminated" } */
|
|
|
|
T (ba[0].a[1].a, asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[1].a[0], asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[1].a[0] + 1, asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[1].a[0] + v0, asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[1].a[1], asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[1].a[1] + 1, asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[0].a[1].a[1] + v0, asz + 1); /* { dg-warning "unterminated" } */
|
|
|
|
T (ba[0].a[1].b, bsz + 1);
|
|
T (&ba[0].a[1].b[0], bsz + 1);
|
|
T (&ba[0].a[1].b[0] + 1, bsz + 1);
|
|
T (&ba[0].a[1].b[0] + v0, bsz + 1); /* { dg-bogus "specified bound 6 exceeds source size 5" pr95794" { xfail *-*-* } } */
|
|
T (&ba[0].a[1].b[1], bsz + 1);
|
|
T (&ba[0].a[1].b[1] + 1, bsz + 1);
|
|
T (&ba[0].a[1].b[1] + v0, bsz + 1); /* { dg-bogus "specified bound 6 exceeds source size 5" pr95794" { xfail *-*-* } } */
|
|
|
|
T (ba[1].a[0].a, asz);
|
|
T (&ba[1].a[0].a[0], asz);
|
|
T (&ba[1].a[0].a[0] + 1, asz); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[0] + v0, asz); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[1], asz); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[1] + 1, asz); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[1] + v0, asz); /* { dg-warning "unterminated" } */
|
|
|
|
T (ba[1].a[0].a, asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[0], asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[0] + 1, asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[0] + v0, asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[1], asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[1] + 1, asz + 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[0].a[1] + v0, asz + 1); /* { dg-warning "unterminated" } */
|
|
|
|
T (ba[1].a[0].b, bsz);
|
|
T (&ba[1].a[0].b[0], bsz);
|
|
T (&ba[1].a[0].b[0] + 1, bsz);
|
|
T (&ba[1].a[0].b[0] + v0, bsz);
|
|
T (&ba[1].a[0].b[1], bsz);
|
|
T (&ba[1].a[0].b[1] + 1, bsz);
|
|
T (&ba[1].a[0].b[1] + v0, bsz);
|
|
|
|
T (ba[1].a[1].a, asz);
|
|
T (&ba[1].a[1].a[0], asz);
|
|
T (&ba[1].a[1].a[0] + 1, asz);
|
|
T (&ba[1].a[1].a[0] + v0, asz);
|
|
T (&ba[1].a[1].a[1], asz);
|
|
T (&ba[1].a[1].a[1] + 1, asz);
|
|
T (&ba[1].a[1].a[1] + v0, asz);
|
|
|
|
T (ba[1].a[1].b, bsz);
|
|
T (&ba[1].a[1].b[0], bsz);
|
|
T (&ba[1].a[1].b[0] + 1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[1].b[0] + 1, bsz - 1);
|
|
T (&ba[1].a[1].b[0] + v0, bsz); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[1].b[1], bsz); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[1].b[1], bsz - 1);
|
|
T (&ba[1].a[1].b[1] + 1, bsz); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[1].b[1] + 1, bsz - 1); /* { dg-warning "unterminated" } */
|
|
T (&ba[1].a[1].b[1] + 1, bsz - 2);
|
|
T (&ba[1].a[1].b[1] + 1, bsz - i2);
|
|
T (&ba[1].a[1].b[1] + v0, bsz); /* { dg-warning "unterminated" } */
|
|
|
|
/* Prune out warnings with no location (pr?????).
|
|
{ dg-prune-output "cc1:" } */
|