gcc/testsuite/gcc.dg/weak/weak-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fno-common" } */
   3
   4 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1a" } } */
   5 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1b" } } */
   6 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1c" } } */
   7 /* { dg-final { scan-assembler-not "weak\[^ \t\]*\[ \t\]_?ffoo1d" } } */
   8 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1e" } } */
   9 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1f" } } */
  10 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1g" } } */
  11
  12 /* test function addresses with __attribute__((weak)) */
  13
  14 extern void * ffoo1a (void) __attribute__((weak));
  15 extern void * ffoo1a (void);
  16 void * foo1a (void)
  17 {
  18   return (void *)ffoo1a;
  19 }
  20
  21
  22 extern void * ffoo1b (void);
  23 extern void * ffoo1b (void) __attribute__((weak));
  24 void * foo1b (void)
  25 {
  26   return (void *)ffoo1b;
  27 }
  28
  29
  30 extern void * ffoo1c (void);
  31 void * foo1c (void)
  32 {
  33   return (void *)ffoo1c;
  34 }
  35 extern void * ffoo1c (void) __attribute__((weak)); /* { dg-warning "weak declaration" "weak declaration" } */
  36
  37
  38 int ffoo1d (void);
  39 int ffoo1d (void) __attribute__((weak));
  40
  41
  42 extern void * ffoo1e (void);
  43 extern void * ffoo1e (void)  __attribute__((weak));
  44 void * foo1e (void)
  45 {
  46   if (ffoo1e)
  47     ffoo1e ();
  48   return 0;
  49 }
  50
  51
  52 extern void * ffoo1f (void);
  53 extern void * ffoox1f (void);
  54 void * foo1f (void)
  55 {
  56   if (ffoo1f)
  57     ffoo1f ();
  58   return 0;
  59 }
  60 extern void * ffoo1f (void)  __attribute__((weak, alias ("ffoox1f"))); /* { dg-warning "weak declaration" "weak declaration" } */
  61
  62
  63 extern void * ffoo1g (void);
  64 extern void * ffoox1g (void);
  65 extern void * ffoo1g (void)  __attribute__((weak, alias ("ffoox1g")));
  66 void * foo1g (void)
  67 {
  68   if (ffoo1g)
  69     ffoo1g ();
  70   return 0;
  71 }