gcc/testsuite/c-c++-common/spellcheck-reserved.c

   1 /* Verify that we don't offer names that are reserved for the
   2    implementation (PR c/83236).  */
   3 /* { dg-options "-nostdinc" } */
   4
   5 /* Example of an identifier with a leading double-underscore.
   6    We shouldn't offer '__ino_t' as a suggestion for an unknown 'ino_t'.  */
   7
   8 typedef unsigned long int __ino_t;
   9 ino_t inode; /* { dg-error "did you mean 'int'" } */
  10
  11
  12 /* Example of a typedef with a leading double-underscore.  */
  13
  14 typedef unsigned char __u_char;
  15 u_char ch; /* { dg-error "did you mean 'char'" } */
  16
  17
  18 /* Example of a macro with a leading double-underscore.  */
  19
  20 # define __SOME_MACRO   int
  21
  22 SOME_MACRO foo; /* { dg-bogus "__SOME_MACRO" } */
  23 /* { dg-error "'SOME_MACRO'" "" { target *-*-* } .-1 } */
  24
  25
  26 /* If the misspelled name itself matches the "reserved" pattern, then
  27    it's OK to suggest such names.  */
  28
  29 void test (const char *buf, char ch)
  30 {
  31   __builtin_strtchr (buf, ch); /* { dg-line misspelled_reserved } */
  32   /* { dg-warning "did you mean '__builtin_strchr'" "" { target c } misspelled_reserved } */
  33   /* { dg-error "not declared"  "" { target c++ } misspelled_reserved } */
  34   /* { dg-message "'__builtin_strrchr'"  "" { target c++ } misspelled_reserved } */
  35 }
  36
  37 /* Similarly for a name that begins with a single underscore.  */
  38
  39 void test_2 (const char *buf, char ch)
  40 {
  41   _builtin_strchr (buf, ch); /* { dg-line misspelled_one_underscore } */
  42   /* { dg-warning "did you mean '__builtin_strchr'" "" { target c } misspelled_one_underscore } */
  43   /* { dg-error "not declared"  "" { target c++ } misspelled_one_underscore } */
  44   /* { dg-message "'__builtin_strchr'"  "" { target c++ } misspelled_one_underscore } */
  45 }
  46
  47 /* Verify that we can correct "__FILE_" to "__FILE__".  */
  48
  49 const char * test_3 (void)
  50 {
  51   return __FILE_; /* { dg-line misspelled__FILE_ } */
  52   /* { dg-error "did you mean '__FILE__'" "" { target c } misspelled__FILE_ } */
  53   /* { dg-error "not declared"  "" { target c++ } misspelled__FILE_ } */
  54   /* { dg-message "'__FILE__'"  "" { target c++ } misspelled__FILE_ } */
  55 }