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

   1 /* Copyright (C) 2001 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do compile } */
   4 /* { dg-options "-Wtraditional -std=c89" } */
   5
   6 /* This tests various diagnostics with -Wtraditioanl about escape
   7    sequences, for both the preprocessor and the compiler.
   8
   9    Neil Booth, 22 May 2001.  */
  10
  11 #if '\a'                /* { dg-warning "traditional" "traditional bell" } */
  12 #endif
  13 #if '\x1a' != 26        /* { dg-warning "traditional" "traditional hex" } */
  14  #error bad hex         /* { dg-bogus "bad" "bad hexadecimal evaluation" } */
  15 #endif
  16 #if L'\u00a1'           /* { dg-warning "only valid" "\u is unknown in C89" } */
  17 #endif
  18
  19 void foo ()
  20 {
  21   int c = '\a';         /* { dg-warning "traditional" "traditional bell" } */
  22
  23   c = '\xa1';           /* { dg-warning "traditional" "traditional hex" } */
  24   c = L'\u00a1';        /* { dg-warning "only valid" "\u is unknown in C89" } */
  25 }