gcc/testsuite/gcc.dg/cpp/escape-1.c

   1 /* Copyright (C) 2001 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do compile } */
   4
   5 /* This tests various diagnostics about escape sequences, for both
   6    the preprocessor and the compiler.
   7
   8    Neil Booth, 22 May 2001.  */
   9
  10 #if '\x'        /* { dg-error "no following" "\x with no digits" } */
  11 #endif
  12 #if '\x400'     /* { dg-error "out of range" "\x out of range" } */
  13 #endif
  14 #if '\x0ff'     /* { dg-bogus "out of range" "\x out of range" } */
  15 #endif
  16 #if '\400'      /* { dg-error "out of range" "\x out of range" } */
  17 #endif
  18 #if '\377'      /* { dg-bogus "out of range" "bogus \x out of range" } */
  19 #endif
  20 #if '\177' != 0x7f /* { dg-bogus "out of range" "bogus \x out of range" } */
  21 #error bad octal /* { dg-bogus "bad" "bad octal evaluation" } */
  22 #endif
  23 #if '\0377'     /* { dg-warning "multi" "too long octal" } */
  24 #endif
  25 #if '\p'        /* { dg-error "unknown escape" "unknown escape seq" } */
  26 #endif
  27
  28 void foo ()
  29 {
  30   int c;
  31
  32   c = '\x';     /* { dg-error "no following" "\x with no digits" } */
  33   c = '\x100';  /* { dg-error "out of range" "\x out of range" } */
  34   c = '\x0ff';  /* { dg-bogus "out of range" "\x out of range" } */
  35   c = '\400';   /* { dg-error "out of range" "\x out of range" } */
  36   c = '\377';   /* { dg-bogus "out of range" "bogus \x out of range" } */
  37   c = '\0377';  /* { dg-warning "multi" "too long octal" } */
  38   c = '\p';     /* { dg-error "unknown escape" "unknown escape seq" } */
  39 }