Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/Wstringop-overflow-15.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
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/* PR middle-end/91458 - inconsistent warning for writing past the end of an array member Verify that the -Wstringop-overflow detection doesn't cause an ICE for either kind of VLAs (member and non-member). Diagnosing the accesses is the subject of pr82608. { dg-do compile } { dg-options "-O2 -Wall -Wno-array-bounds" } */ void sink (void*); void vla_unbounded (int n) { char a[n]; a[0] = 0; a[1] = 1; a[n] = n; // { dg-warning "\\\[-Wstringop-overflow" "pr82608" { xfail *-*-* } } sink (&a); } void vla_bounded (int n) { if (n > 32) n = 32; char a[n]; a[0] = 0; a[1] = 1; a[n] = n; // { dg-warning "\\\[-Wstringop-overflow" "pr82608" { xfail *-*-* } } a[69] = n; // { dg-warning "\\\[-Wstringop-overflow" "pr82608" { xfail *-*-* } } sink (&a); } void member_vla_unbounded (int n) { struct S { char i, a[n]; } s; s.a[0] = 0; s.a[1] = 1; s.a[n] = n; // { dg-warning "\\\[-Wstringop-overflow" "pr82608" { xfail *-*-* } } sink (&s); } void member_vla_bounded (int n) { if (n > 32) n = 32; struct S { char i, a[n]; } s; s.a[0] = 0; s.a[1] = 1; s.a[n] = n; // { dg-warning "\\\[-Wstringop-overflow" "pr82608" { xfail *-*-* } } s.a[69] = n; // { dg-warning "\\\[-Wstringop-overflow" "pr82608" { xfail *-*-* } } sink (&s); }