gomp-20050608-branch/gcc/testsuite/gcc.dg/weak/weak-14.c

   1 // { dg-do run }
   2 // { dg-require-weak "" }
   3 // { dg-require-alias "" }
   4 // { dg-options "-O2 -fno-common" }
   5
   6 // Copyright 2005 Free Software Foundation, Inc.
   7 // Contributed by Alexandre Oliva <aoliva@redhat.com>
   8
   9 // PR middle-end/24295
  10
  11 // The unit-at-a-time call graph code used to fail to emit variables
  12 // without external linkage that were only used indirectly, through
  13 // aliases.  We might then get linker failures because the static
  14 // variable was not defined, or run-time errors because the weak alias
  15 // ended up pointing somewhere random.
  16
  17 #include <stdlib.h>
  18
  19 static unsigned long lv1 = 0xdeadbeefUL;
  20 #pragma weak Av1a = lv1
  21 extern unsigned long Av1a;
  22
  23 static unsigned long lf1(void) { return 0x510bea7UL; }
  24 #pragma weak Af1a = lf1
  25 extern unsigned long Af1a(void);
  26
  27 int main (void) {
  28   if (! &Av1a
  29       || ! &Af1a
  30       || Av1a != 0xdeadbeefUL
  31       || Af1a() != 0x510bea7UL)
  32     abort ();
  33   exit (0);
  34 }