clang/test/Sema/warn-stringcompare.c

   1 // RUN: %clang_cc1 -x c -fsyntax-only -verify %s
   2 // RUN: %clang_cc1 -x c++ -fsyntax-only -verify %s
   3
   4 #define DELIM "/"
   5 #define DOT "."
   6 #define NULL (void *)0
   7
   8 void test(const char *d) {
   9   if ("/" != d) // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
  10     return;
  11   if (d == "/") // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
  12     return;
  13   if ("/" != NULL)
  14     return;
  15   if (NULL == "/")
  16     return;
  17   if ("/" != DELIM) // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
  18     return;
  19   if (DELIM == "/") // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
  20     return;
  21   if (DELIM != NULL)
  22     return;
  23   if (NULL == DELIM)
  24     return;
  25   if (DOT != DELIM) // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
  26     return;
  27   if (DELIM == DOT) // expected-warning {{result of comparison against a string literal is unspecified (use an explicit string comparison function instead)}}
  28     return;
  29 }