Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/builtin-object-size-9.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* { dg-do run } */ /* { dg-options "-O2" } */ typedef __SIZE_TYPE__ size_t; extern void *malloc (size_t); extern void free (void *); extern void abort (void); union U { struct S { int a; int b; } s; int t; }; struct T { int c; char d[1]; }; int main (void) { union U *u = malloc (sizeof (struct S) + sizeof (struct T) + 6); struct T *t = (struct T *) (&u->s + 1); if (__builtin_object_size (t->d, 1) != sizeof (struct T) + 6 - __builtin_offsetof (struct T, d)) abort (); free (u); return 0; }