aee4925507
Based on post-commit review discussion on 2bd84938470bf2e337801faafb8a67710f46429d with Richard Smith. Other uses of forcing HasEmptyPlaceHolder to false seem OK to me - they're all around pointer/reference types where the pointer/reference token will appear at the rightmost side of the left side of the type name, so they make nested types (eg: the "int" in "int *") behave as though there is a non-empty placeholder (because the "*" is essentially the placeholder as far as the "int" is concerned). This was originally committed in 277623f4d5a672d707390e2c3eaf30a9eb4b075c Reverted in f9ad1d1c775a8e264bebc15d75e0c6e5c20eefc7 due to breakages outside of clang - lldb seems to have some strange/strong dependence on "char [N]" versus "char[N]" when printing strings (not due to that name appearing in DWARF, but probably due to using clang to stringify type names) that'll need to be addressed, plus a few other odds and ends in other subprojects (clang-tools-extra, compiler-rt, etc).
37 lines
1.6 KiB
C++
37 lines
1.6 KiB
C++
// RUN: %clang_cc1 -triple i386-pc-win32 -fsyntax-only -fno-wchar -verify %s
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// RUN: %clang_cc1 -triple i386-pc-win32 -fsyntax-only -fno-wchar -verify -std=c++98 %s
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// RUN: %clang_cc1 -triple i386-pc-win32 -fsyntax-only -fno-wchar -verify -std=c++11 %s
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wchar_t x; // expected-error {{unknown type name 'wchar_t'}}
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typedef unsigned short wchar_t;
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void foo(const wchar_t* x);
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void bar() {
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foo(L"wide string literal");
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}
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void foo1(wchar_t * t = L"");
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#if __cplusplus <= 199711L
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// expected-warning@-2 {{conversion from string literal to 'wchar_t *' (aka 'unsigned short *') is deprecated}}
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#else
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// expected-warning@-4 {{ISO C++11 does not allow conversion from string literal to 'wchar_t *' (aka 'unsigned short *')}}
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#endif
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short *a = L"";
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// expected-error@-1 {{cannot initialize a variable of type 'short *' with an lvalue of type 'const unsigned short[1]'}}
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char *b = L"";
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// expected-error@-1 {{cannot initialize a variable of type 'char *' with an lvalue of type 'const unsigned short[1]'}}
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// NOTE: MSVC allows deprecated conversion in conditional expression if at least
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// one of the operand is a string literal but Clang doesn't allow it.
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wchar_t *c = true ? L"a" : L"";
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// expected-error@-1 {{cannot initialize a variable of type 'wchar_t *' (aka 'unsigned short *') with}}
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const wchar_t *d1 = 0;
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const wchar_t *d2 = 0;
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wchar_t *d = true ? d1 : d2;
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// expected-error@-1 {{cannot initialize a variable of type 'wchar_t *' (aka 'unsigned short *') with}}
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wchar_t* e = (const wchar_t*)L"";
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// 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 *')}}
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