gcc/testsuite/gcc.c-torture/compile/20060109-1.c

   1 /* This test exposed a bug in combine where it was improperly changing
   2    the mode of a register.  The bug appeared to be latent until web
   3    was moved after combine.  This is the reduced test that fails
   4    by crashing in reload.  */
   5
   6
   7 typedef struct cpp_reader cpp_reader;
   8 typedef struct cpp_string cpp_string;
   9 struct cpp_string
  10 {
  11   unsigned int len;
  12   const unsigned char *text;
  13 };
  14 struct cpp_callbacks
  15 {
  16   void (*ident) (cpp_reader *, unsigned int, const cpp_string *);
  17 };
  18 static void cb_ident (cpp_reader *, unsigned int, const cpp_string *);
  19 init_c_lex (void)
  20 {
  21   struct cpp_callbacks *cb;
  22   cb->ident = cb_ident;
  23 }
  24 cb_ident (cpp_reader * pfile __attribute__ ((__unused__)), unsigned int
  25 line
  26           __attribute__ ((__unused__)), const cpp_string * str
  27           __attribute__ ((__unused__)))
  28 {
  29   {
  30     cpp_string cstr = {
  31     };
  32     if (cpp_interpret_string (pfile, str, 1, &cstr, 0))
  33       {
  34       }
  35   }
  36 }