gcc/testsuite/gcc.dg/weak/weak-5.c

   1 /* { dg-do compile } */
   2 /* { dg-require-weak "" } */
   3 /* { dg-options "-fno-common" } */
   4
   5 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1a" } } */
   6 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1b" } } */
   7 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1c" } } */
   8 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1d" } } */
   9 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1e" } } */
  10 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1f" } } */
  11 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1g" } } */
  12 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1h" } } */
  13 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1i" } } */
  14 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1j" } } */
  15 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1k" } } */
  16 /* { dg-final { scan-assembler "weak\[^ \t\]*\[ \t\]_?vfoo1l" } } */
  17
  18 /* test variable addresses with __attribute__ ((weak)) */
  19
  20 extern int vfoo1a __attribute__((weak));
  21 extern int vfoo1a;
  22 void * foo1a (void)
  23 {
  24   return (void *)&vfoo1a;
  25 }
  26
  27
  28 extern int vfoo1b;
  29 extern int vfoo1b __attribute__((weak));
  30 void * foo1b (void)
  31 {
  32   return (void *)&vfoo1b;
  33 }
  34
  35
  36 extern int vfoo1c;
  37 void * foo1c (void)
  38 {
  39   return (void *)&vfoo1c;
  40 }
  41 extern int vfoo1c __attribute__((weak)); /* { dg-warning "unspecified behavior" } */
  42
  43
  44 extern int vfoo1d __attribute__((weak));
  45 int vfoo1d;
  46 void * foo1d (void)
  47 {
  48   return (void *)&vfoo1d;
  49 }
  50
  51
  52 int vfoo1e;
  53 extern int vfoo1e __attribute__((weak));
  54 void * foo1e (void)
  55 {
  56   return (void *)&vfoo1e;
  57 }
  58
  59
  60 int vfoo1f;
  61 void * foo1f (void)
  62 {
  63   return (void *)&vfoo1f;
  64 }
  65 extern int vfoo1f __attribute__((weak)); /* { dg-warning "unspecified behavior" } */
  66
  67
  68 extern int vfoo1g;
  69 void * foo1g (void)
  70 {
  71   return (void *)&vfoo1g;
  72 }
  73 int vfoo1g __attribute__((weak)); /* { dg-warning "unspecified behavior" } */
  74
  75
  76 extern int vfoo1h __attribute__((weak));
  77 void * foo1h (void)
  78 {
  79   return (void *)&vfoo1h;
  80 }
  81 extern int vfoo1h __attribute__((weak));
  82 int vfoo1h;
  83
  84
  85 extern int vfoo1i __attribute__((weak));
  86 void * foo1i (void)
  87 {
  88   return (void *)&vfoo1i;
  89 }
  90 extern int vfoo1i __attribute__((weak));
  91 extern int vfoo1i;
  92
  93
  94 extern int vfoo1j __attribute__((weak));
  95 void * foo1j (void)
  96 {
  97   return (void *)&vfoo1j;
  98 }
  99 extern int vfoo1j;
 100 extern int vfoo1j __attribute__((weak));
 101
 102
 103 extern int vfoo1k __attribute__((weak));
 104 int vfoo1k = 1;
 105
 106
 107 int vfoox1l = 1;
 108 extern int vfoo1l __attribute__((weak, alias ("vfoox1l")));