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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
52 lines
3.2 KiB
C
52 lines
3.2 KiB
C
// RUN: %clang_cc1 -std=c11 -fsyntax-only -triple x86_64-pc-linux -verify %s
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// Note: these match the types specified by the target above.
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typedef int wchar_t;
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typedef unsigned short char16_t;
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typedef unsigned int char32_t;
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void f() {
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char a1[] = "a"; // No error.
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char a2[] = u8"a"; // No error.
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char a3[] = u"a"; // expected-error{{initializing char array with wide string literal}}
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char a4[] = U"a"; // expected-error{{initializing char array with wide string literal}}
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char a5[] = L"a"; // expected-error{{initializing char array with wide string literal}}
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wchar_t b1[] = "a"; // expected-error{{initializing wide char array with non-wide string literal}}
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wchar_t b2[] = u8"a"; // expected-error{{initializing wide char array with non-wide string literal}}
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wchar_t b3[] = u"a"; // expected-error{{initializing wide char array with incompatible wide string literal}}
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wchar_t b4[] = U"a"; // expected-error{{initializing wide char array with incompatible wide string literal}}
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wchar_t b5[] = L"a"; // No error.
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char16_t c1[] = "a"; // expected-error{{initializing wide char array with non-wide string literal}}
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char16_t c2[] = u8"a"; // expected-error{{initializing wide char array with non-wide string literal}}
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char16_t c3[] = u"a"; // No error.
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char16_t c4[] = U"a"; // expected-error{{initializing wide char array with incompatible wide string literal}}
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char16_t c5[] = L"a"; // expected-error{{initializing wide char array with incompatible wide string literal}}
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char32_t d1[] = "a"; // expected-error{{initializing wide char array with non-wide string literal}}
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char32_t d2[] = u8"a"; // expected-error{{initializing wide char array with non-wide string literal}}
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char32_t d3[] = u"a"; // expected-error{{initializing wide char array with incompatible wide string literal}}
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char32_t d4[] = U"a"; // No error.
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char32_t d5[] = L"a"; // expected-error{{initializing wide char array with incompatible wide string literal}}
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int e1[] = "a"; // expected-error{{initializing wide char array with non-wide string literal}}
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int e2[] = u8"a"; // expected-error{{initializing wide char array with non-wide string literal}}
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int e3[] = u"a"; // expected-error{{initializing wide char array with incompatible wide string literal}}
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int e4[] = U"a"; // expected-error{{initializing wide char array with incompatible wide string literal}}
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int e5[] = L"a"; // No error.
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long f1[] = "a"; // expected-error{{array initializer must be an initializer list}}
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long f2[] = u8"a"; // expected-error{{array initializer must be an initializer list}}}
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long f3[] = u"a"; // expected-error{{array initializer must be an initializer list}}
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long f4[] = U"a"; // expected-error{{array initializer must be an initializer list}}
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long f5[] = L"a"; // expected-error{{array initializer must be an initializer list}}
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}
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void g() {
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char a[] = 1; // expected-error{{array initializer must be an initializer list or string literal}}
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wchar_t b[] = 1; // expected-error{{array initializer must be an initializer list or wide string literal}}
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char16_t c[] = 1; // expected-error{{array initializer must be an initializer list or wide string literal}}
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char32_t d[] = 1; // expected-error{{array initializer must be an initializer list or wide string literal}}
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}
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