gcc/testsuite/gcc.dg/weak/weak-3.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 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1f" } } */
  11 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?ffoo1g" } } */
  12
  13 /* test function addresses with __attribute__((weak)) */
  14
  15 extern void * ffoo1a (void) __attribute__((weak));
  16 extern void * ffoo1a (void);
  17 void * foo1a (void)
  18 {
  19   return (void *)ffoo1a;
  20 }
  21
  22
  23 extern void * ffoo1b (void);
  24 extern void * ffoo1b (void) __attribute__((weak));
  25 void * foo1b (void)
  26 {
  27   return (void *)ffoo1b;
  28 }
  29
  30
  31 extern void * ffoo1c (void);
  32 void * foo1c (void)
  33 {
  34   return (void *)ffoo1c;
  35 }
  36 extern void * ffoo1c (void) __attribute__((weak)); /* { dg-warning "weak declaration" "weak declaration" } */
  37
  38
  39 int ffoo1d (void);
  40 int ffoo1d (void) __attribute__((weak));
  41
  42
  43 extern void * ffoo1e (void);
  44 extern void * ffoo1e (void)  __attribute__((weak));
  45 void * foo1e (void)
  46 {
  47   if (ffoo1e)
  48     ffoo1e ();
  49   return 0;
  50 }
  51
  52
  53 extern void * ffoo1f (void);
  54 extern void * ffoox1f (void);
  55 void * foo1f (void)
  56 {
  57   if (ffoo1f) /* { dg-warning "" } */
  58     ffoo1f ();
  59   return 0;
  60 }
  61 extern void * ffoo1f (void)  __attribute__((weak, alias ("ffoox1f"))); /* { dg-warning "weak declaration" "weak declaration" } */
  62
  63
  64 extern void * ffoo1g (void);
  65 extern void * ffoox1g (void);
  66 extern void * ffoo1g (void)  __attribute__((weak, alias ("ffoox1g")));
  67 void * foo1g (void)
  68 {
  69   if (ffoo1g)
  70     ffoo1g ();
  71   return 0;
  72 }