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/* Copyright (C) 2001 Free Software Foundation, Inc.  */

/* { dg-do compile } */

/* This tests various diagnostics about character constants, for both

   the preprocessor and the compiler.

   Neil Booth, 22 May 2001.  */

#if ''                  /* { dg-warning "empty" "empty charconst" } */

#endif

#if L''                 /* { dg-warning "empty" "empty wide charconst" } */

#endif

#if 'very long'         /* { dg-warning "too long" "long charconst" } */

#endif

#if L'very long'        /* { dg-warning "too long" "long wide charconst" } */

#endif

/* Don't do this test for L'ab'; it depends upon sizeof (wchar_t).  */

#if 'ab'                /* { dg-warning "multi-char" "multi-character" } */

#endif

void foo ()

{

  int c;

  __WCHAR_TYPE__ w;

  c = '';               /* { dg-warning "empty" "empty charconst" } */

  w = L'';              /* { dg-warning "empty" "empty wide charconst" } */

  c = 'very long';      /* { dg-warning "too long" "long charconst" } */

  w = L'very long';     /* { dg-warning "too long" "long wide charconst" } */

  c = 'ab';             /* { dg-warning "multi-char" "multi-char" } */

  /* Wide charconsts cannot contain more than one wide character.  */

  w = L'ab';            /* { dg-warning "too long" "multi-char wide" } */

}