sdcc/support/regression/tests/gcc-torture-execute-20051104-1.c

   1 /*
   2    20051104-1.c from the execute part of the gcc torture suite.
   3  */
   4
   5 /*
   6    Optimization transformed 'if (cond) *ptr = 0;' into '*ptr = (cond) ? 0 : *ptr;'
   7    and thus wrote to literal string which gives undefined behavior
   8    or in the case of gcc a segmentation fault.
   9    The pointer being a plain char* and assigned a literal string is essential to the bug.
  10    Therefor warning 196 must be disabled.
  11  */
  12
  13 #include <testfwk.h>
  14
  15 #ifdef __SDCC
  16 #pragma std_c99
  17 #pragma disable_warning 196
  18 #endif
  19
  20 /* PR rtl-optimization/23567 */
  21
  22 struct
  23 {
  24   int len;
  25   char *name;
  26 } s;
  27
  28 void
  29 testTortureExecute (void)
  30 {
  31   s.len = 0;
  32   s.name = "";
  33   if (s.name [s.len] != 0)
  34     s.name [s.len] = 0;
  35   return;
  36 }