clang/test/Sema/warn-string-conversion.c

   1 // RUN: %clang_cc1 -verify -fsyntax-only -Wstring-conversion %s
   2
   3 void do_nothing(void);
   4 void assert_error(void);
   5
   6 #define assert1(expr) \
   7   if (expr)           \
   8     do_nothing();     \
   9   else                \
  10   assert_error()
  11
  12 #define assert2(expr) \
  13   ((expr) ? do_nothing() : assert_error())
  14
  15 // Exception for common assert form.
  16 void test1(void) {
  17   assert1(0 && "foo");
  18   assert1("foo" && 0);
  19   assert1(0 || "foo"); // expected-warning {{string literal}}
  20   assert1("foo"); // expected-warning {{string literal}}
  21
  22   assert2(0 && "foo");
  23   assert2("foo" && 0);
  24   assert2(0 || "foo"); // expected-warning {{string literal}}
  25   assert2("foo"); // expected-warning {{string literal}}
  26 }
  27
  28 void test2(void) {
  29   if ("hi") {}           // expected-warning {{string literal}}
  30   while ("hello") {}     // expected-warning {{string literal}}
  31   for (;"howdy";) {}     // expected-warning {{string literal}}
  32   do { } while ("hey");  // expected-warning {{string literal}}
  33   int x = "hey" ? 1 : 2; // expected-warning {{string literal}}
  34 }