clang/test/SemaCXX/no-wchar.cpp

   1 // RUN: %clang_cc1 -triple i386-pc-win32 -fsyntax-only -fno-wchar -verify %s
   2 // RUN: %clang_cc1 -triple i386-pc-win32 -fsyntax-only -fno-wchar -verify -std=c++98 %s
   3 // RUN: %clang_cc1 -triple i386-pc-win32 -fsyntax-only -fno-wchar -verify -std=c++11 %s
   4 wchar_t x; // expected-error {{unknown type name 'wchar_t'}}
   5
   6 typedef unsigned short wchar_t;
   7 void foo(const wchar_t* x);
   8
   9 void bar() {
  10   foo(L"wide string literal");
  11 }
  12
  13 void foo1(wchar_t * t = L"");
  14 #if __cplusplus <= 199711L
  15 // expected-warning@-2 {{conversion from string literal to 'wchar_t *' (aka 'unsigned short *') is deprecated}}
  16 #else
  17 // expected-warning@-4 {{ISO C++11 does not allow conversion from string literal to 'wchar_t *' (aka 'unsigned short *')}}
  18 #endif
  19
  20 short *a = L"";
  21 // expected-error@-1 {{cannot initialize a variable of type 'short *' with an lvalue of type 'const unsigned short[1]'}}
  22 char *b = L"";
  23 // expected-error@-1 {{cannot initialize a variable of type 'char *' with an lvalue of type 'const unsigned short[1]'}}
  24
  25 // NOTE: MSVC allows deprecated conversion in conditional expression if at least
  26 // one of the operand is a string literal but Clang doesn't allow it.
  27 wchar_t *c = true ? L"a" : L"";
  28 // expected-error@-1 {{cannot initialize a variable of type 'wchar_t *' (aka 'unsigned short *') with}}
  29
  30 const wchar_t *d1 = 0;
  31 const wchar_t *d2 = 0;
  32 wchar_t *d = true ? d1 : d2;
  33 // expected-error@-1 {{cannot initialize a variable of type 'wchar_t *' (aka 'unsigned short *') with}}
  34
  35 wchar_t* e = (const wchar_t*)L"";
  36 // expected-error@-1 {{cannot initialize a variable of type 'wchar_t *' (aka 'unsigned short *') with an rvalue of type 'const wchar_t *' (aka 'const unsigned short *')}}