clang/test/SemaCXX/wchar_t.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 // RUN: %clang_cc1 -fsyntax-only -Wno-signed-unsigned-wchar -verify=allow-signed -DSKIP_ERROR_TESTS %s
   3 // allow-signed-no-diagnostics
   4 wchar_t x;
   5
   6 void f(wchar_t p) {
   7   wchar_t x;
   8   unsigned wchar_t y; // expected-error {{'wchar_t' cannot be signed or unsigned}}
   9   signed wchar_t z; // expected-error {{'wchar_t' cannot be signed or unsigned}}
  10   ++x;
  11 }
  12
  13 // PR4502
  14 wchar_t const c = L'c';
  15 int a[c == L'c' ? 1 : -1];
  16
  17
  18 // PR5917
  19 template<typename _CharT>
  20 struct basic_string {
  21 };
  22
  23 template<typename _CharT>
  24 basic_string<_CharT> operator+ (const basic_string<_CharT>&, _CharT);
  25
  26 int t(void) {
  27   basic_string<wchar_t>() + L'-';
  28   return (0);
  29 }
  30
  31
  32 wchar_t in[] = L"\x434" "\x434";  // No warning
  33
  34 #ifndef SKIP_ERROR_TESTS
  35 // Verify that we do not crash when assigning wchar_t* to another pointer type.
  36 void assignment(wchar_t *x) {
  37   char *y;
  38   y = x; // expected-error {{incompatible pointer types assigning to 'char *' from 'wchar_t *'}}
  39 }
  40 #endif