8f62c5ca22
This commit improves Clang's diagnostics for string initialization.
Where it would previously say:
/tmp/a.c:3:9: error: array initializer must be an initializer list
wchar_t s[] = "Hi";
^
/tmp/a.c:4:6: error: array initializer must be an initializer list or string literal
char t[] = L"Hi";
^
It will now say
/tmp/a.c:3:9: error: initializing wide char array with non-wide string literal
wchar_t s[] = "Hi";
^
/tmp/a.c:4:6: error: initializing char array with wide string literal
char t[] = L"Hi";
^
As a bonus, it also fixes the fact that Clang would previously reject
this valid C11 code:
char16_t s[] = u"hi";
char32_t t[] = U"hi";
because it would only recognize the built-in types for char16_t and
char32_t, which do not exist in C.
llvm-svn: 181880
40 lines
1.7 KiB
C++
40 lines
1.7 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++11 -Wfour-char-constants -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c11 -x c -Wfour-char-constants -fsyntax-only -verify %s
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#ifndef __cplusplus
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typedef __WCHAR_TYPE__ wchar_t;
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typedef __CHAR16_TYPE__ char16_t;
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typedef __CHAR32_TYPE__ char32_t;
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#endif
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int a = 'ab'; // expected-warning {{multi-character character constant}}
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int b = '\xFF\xFF'; // expected-warning {{multi-character character constant}}
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int c = 'APPS'; // expected-warning {{multi-character character constant}}
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char d = '⌘'; // expected-error {{character too large for enclosing character literal type}}
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char e = '\u2318'; // expected-error {{character too large for enclosing character literal type}}
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#ifdef __cplusplus
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auto f = '\xE2\x8C\x98'; // expected-warning {{multi-character character constant}}
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#endif
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char16_t g = u'ab'; // expected-error {{Unicode character literals may not contain multiple characters}}
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char16_t h = u'\U0010FFFD'; // expected-error {{character too large for enclosing character literal type}}
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wchar_t i = L'ab'; // expected-warning {{extraneous characters in character constant ignored}}
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wchar_t j = L'\U0010FFFD';
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char32_t k = U'\U0010FFFD';
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char l = 'Ø'; // expected-error {{character too large for enclosing character literal type}}
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char m = '👿'; // expected-error {{character too large for enclosing character literal type}}
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char32_t n = U'ab'; // expected-error {{Unicode character literals may not contain multiple characters}}
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char16_t o = '👽'; // expected-error {{character too large for enclosing character literal type}}
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char16_t p[2] = u"\U0000FFFF";
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char16_t q[2] = u"\U00010000";
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#ifdef __cplusplus
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// expected-error@-2 {{too long}}
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#endif
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