gcc/testsuite/gcc.dg/uninit-H-O0.c

   1 /* PR 14204 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wall -Werror" } */
   4
   5 #if defined __alpha__
   6 # define ASM __asm__("$30")
   7 #elif defined __i386__
   8 # define ASM __asm__("esp")
   9 #elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER)
  10 # define ASM __asm__("r1")
  11 #elif defined __s390__
  12 # define ASM __asm__("r15")
  13 #elif defined __mips
  14 # define ASM __asm__("$sp")
  15 #elif defined __sparc__
  16 # define ASM __asm__("sp")
  17 #elif defined __ia64__
  18 # define ASM __asm__("r12")
  19 #elif defined __hppa__
  20 # define ASM __asm__("%r30")
  21 #elif defined __xtensa__
  22 # define ASM __asm__("sp")
  23 #else
  24 /* The register name should be target-dependent so for other targets,
  25    we just silence the test.  */
  26 # define ASM = 0
  27 #endif
  28
  29 void *load_PCB (void)
  30 {
  31   register void *sp ASM;
  32   return sp;                    /* { dg-bogus "uninitialized" } */
  33 }