gcc/testsuite/gcc.dg/cpp/lexstrng.c

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do run } */
   4 /* { dg-options "-trigraphs" } */
   5
   6 /* Test lexing of strings and character constants.  */
   7
   8 #ifndef __WCHAR_TYPE__
   9 #define __WCHAR_TYPE__ int
  10 #endif
  11 typedef __WCHAR_TYPE__ wchar_t;
  12
  13 extern int strcmp (const char *, const char *);
  14 extern int puts (const char *);
  15 extern void abort (void);
  16 #define err(str) do { puts(str); abort(); } while (0)
  17
  18 /* Escaped newlines.  */
  19 const char *str1 = "s\
  20 t\
  21 \
  22 r??/
  23   1";
  24
  25 const char x = '\
  26 ??/
  27 b';
  28
  29 /* Test escaped terminators.  */
  30 const char *term = "\"\\\"\\";
  31 const char termc = '\'';
  32 const char *terms = "'";
  33
  34 /* Test wide strings and chars are lexed.  */
  35 const wchar_t wchar = L'w';
  36 const wchar_t* wstring = L"wide string";
  37
  38 /* Test all 9 trigraphs embedded in a string.  Test trigraphs do not
  39    survive an embedded backslash newline.  Test trigraphs preceded by
  40    a '?' are still noticed.  */
  41 const char *t = "??/\??<??>??=??)??\
  42 (??(??!??'??-???=???/
  43 ?-";
  44
  45 int main (int argc, char *argv[])
  46 {
  47   if (strcmp (str1, "str  1"))
  48     err ("str1");
  49
  50   if (x != 'b')
  51     err ("b");
  52
  53   /* We have to split the string up to avoid trigraph replacement
  54      here.  Split the 2 trigraphs after both 1 and 2 ?s; just doing
  55      this exposed a bug in the initial release of the tokenized lexer.  */
  56   if (strcmp (t, "\\{}#]?" "?([|^~?#??" "-"))
  57     err ("Embedded trigraphs");
  58
  59   if (term[0] != '"' || term[1] != '\\' || term[2] != '"'
  60       || term[3] != '\\' || term[4] != '\0')
  61     err ("Escaped string terminators");
  62
  63   if (termc != terms[0])
  64     err ("Escaped character constant terminator");
  65
  66   return 0;
  67 }