gcc/testsuite/gcc.dg/torture/pr53922.c

   1 /* { dg-do run } */
   2 /* { dg-require-weak "" } */
   3 /* { dg-skip-if "No undefined" { *-*-mingw* } { "*" } { "" } } */
   4 /* { dg-skip-if "No undefined weak" { *-*-aix* } { "*" } { "" } } */
   5 /* { dg-skip-if "No undefined weak" { hppa*-*-hpux* && { ! lp64 } } { "*" } { "" } } */
   6 /* { dg-skip-if "No undefined weak" { nvptx-*-* } { "*" } { "" } } */
   7 /* { dg-options "-Wl,-undefined,dynamic_lookup" { target *-*-darwin* } } */
   8 /* { dg-additional-options "-Wl,-flat_namespace" { target *-*-darwin[89]* } } */
   9
  10 int x(int a)
  11 {
  12   return a;
  13 }
  14 int y(int a) __attribute__ ((weak));
  15 int g = 0;
  16 int main()
  17 {
  18   int (*scan_func)(int);
  19   if (g)
  20     scan_func = x;
  21   else
  22     scan_func = y;
  23
  24   if (scan_func)
  25     g = scan_func(10);
  26
  27   return 0;
  28 }