gcc/testsuite/gcc.c-torture/execute/20000818-1.c

   1 /* Copyright (C) 2000  Free Software Foundation.
   2
   3    by Manfred Hollstein <manfredh@redhat.com>  */
   4
   5 void *temporary_obstack;
   6
   7 static int input (void);
   8 static int ISALNUM (int ch);
   9 static void obstack_1grow (void **ptr, int ch);
  10
  11 int yylex (void);
  12 int main (void);
  13
  14 int main (void)
  15 {
  16   int ch = yylex ();
  17
  18   exit (0);
  19 }
  20
  21 int yylex (void)
  22 {
  23   int ch;
  24
  25 #ifndef WORK_AROUND
  26   for (;;)
  27     {
  28       ch = input ();
  29       if (ISALNUM (ch))
  30         obstack_1grow (&temporary_obstack, ch);
  31       else if (ch != '_')
  32         break;
  33     }
  34 #else
  35   do
  36     {
  37       ch = input ();
  38       if (ISALNUM (ch))
  39         obstack_1grow (&temporary_obstack, ch);
  40     } while (ch == '_');
  41 #endif
  42
  43   return ch;
  44 }
  45
  46 static int input (void)
  47 {
  48   return 0;
  49 }
  50
  51 static int ISALNUM (int ch)
  52 {
  53   return ((ch >= 'A' && ch <= 'Z')
  54           || (ch >= 'a' && ch <= 'z')
  55           || (ch >= '0' && ch <= '0'));
  56 }
  57
  58 static void obstack_1grow (void **ptr, int ch)
  59 {
  60 }