gcc/testsuite/gcc.dg/visibility-11.c

   1 /* PR middle-end/20297 */
   2 /* The memcpy FUNCTION_DECL built in the middle-end for block moves got
   3    hidden visibility from the first push, so the call didn't use the PLT.  */
   4
   5 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
   6 /* { dg-skip-if "" { *-*-darwin* } { "*" } { "" } } */
   7 /* { dg-require-visibility "" } */
   8 /* { dg-options "-Os -fpic -mstringop-strategy=libcall" } */
   9 /* { dg-final { scan-assembler "memcpy@PLT" } } */
  10
  11 #pragma GCC visibility push(hidden)
  12 #pragma GCC visibility push(default)
  13 extern void* memcpy (void *, const void *, __SIZE_TYPE__);
  14 #pragma GCC visibility pop
  15
  16 struct a { int a[4096]; };
  17
  18 extern void *bar (struct a *, struct a *, int);
  19
  20 void *
  21 foo (struct a *a, struct a *b, int c)
  22 {
  23   struct a cc = *b;
  24   return bar (a, &cc, 4 * c);
  25 }