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 int cpp_interpret_string (cpp_reader *, const cpp_string *, int,
  20                           cpp_string *, int);
  21 void
  22 init_c_lex (void)
  23 {
  24   struct cpp_callbacks *cb;
  25   cb->ident = cb_ident;
  26 }
  27 static void
  28 cb_ident (cpp_reader * pfile __attribute__ ((__unused__)), unsigned int
  29 line
  30           __attribute__ ((__unused__)), const cpp_string * str
  31           __attribute__ ((__unused__)))
  32 {
  33   {
  34     cpp_string cstr = {
  35     };
  36     if (cpp_interpret_string (pfile, str, 1, &cstr, 0))
  37       {
  38       }
  39   }
  40 }