gcc/testsuite/gcc.dg/weak/weak-2.c

   1 /* { dg-do compile } */
   2 /* { dg-require-weak "" } */
   3 /* { dg-options "-fno-common" } */
   4
   5 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1a" } } */
   6 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1b" } } */
   7 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1c" } } */
   8 /* { dg-final { scan-assembler-not "weak\[^ \t\]*\[ \t\]_?ffoo1d" } } */
   9 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1e" } } */
  10
  11 /* test function addresses with #pragma weak */
  12
  13 #pragma weak ffoo1a
  14 extern void * ffoo1a (void);
  15 void * foo1a (void)
  16 {
  17   return (void *)ffoo1a;
  18 }
  19
  20 extern void * ffoo1b (void);
  21 #pragma weak ffoo1b
  22 void * foo1b (void)
  23 {
  24   return (void *)ffoo1b;
  25 }
  26
  27 extern void * ffoo1c (void);  /* { dg-warning "applying #pragma weak" "applying #pragma weak" } */
  28 void * foo1c (void)
  29 {
  30   return (void *)ffoo1c;
  31 }
  32 #pragma weak ffoo1c
  33
  34
  35 int ffoo1d (void);
  36 #pragma weak ffoo1d
  37
  38
  39 extern void * ffoo1e (void);
  40 #pragma weak ffoo1e
  41 void * foo1e (void)
  42 {
  43   if (ffoo1e)
  44     ffoo1e ();
  45   return 0;
  46 }
  47