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[AST] Use a bit of trickery to make test pass on platforms where wchar_t is unsigned. 

llvm-svn: 330689
This commit is contained in:
Benjamin Kramer 2018-04-24 07:53:10 +00:00
parent adb5bfe75b
commit 2fdf81fb2c
1 changed files with 5 additions and 3 deletions
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8
clang/test/SemaCXX/constexpr-string.cpp
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@ -107,7 +107,7 @@ namespace WcscmpEtc {
static_assert(__builtin_wcscmp(L"abab", L"abab\0banana") == 0);
static_assert(__builtin_wcscmp(L"abab\0banana", L"abab\0canada") == 0);
#if __WCHAR_WIDTH__ == 32
static_assert(__builtin_wcscmp(L"a\x83838383", L"a") == -1);
static_assert(__builtin_wcscmp(L"a\x83838383", L"a") == wchar_t(-1U) >> 31);
#endif
static_assert(__builtin_wcscmp(0, L"abab") == 0); // expected-error {{not an integral constant}} expected-note {{dereferenced null}}
static_assert(__builtin_wcscmp(L"abab", 0) == 0); // expected-error {{not an integral constant}} expected-note {{dereferenced null}}
@ -124,7 +124,8 @@ namespace WcscmpEtc {
static_assert(__builtin_wcsncmp(0, 0, 0) == 0);
static_assert(__builtin_wcsncmp(L"abab\0banana", L"abab\0canada", 100) == 0);
#if __WCHAR_WIDTH__ == 32
static_assert(__builtin_wcsncmp(L"a\x83838383", L"aa", 2) == -1);
static_assert(__builtin_wcsncmp(L"a\x83838383", L"aa", 2) ==
wchar_t(-1U) >> 31);
#endif
static_assert(__builtin_wcsncmp(kFoobar, kFoobazfoobar, 6) == -1);
@ -136,7 +137,8 @@ namespace WcscmpEtc {
static_assert(__builtin_wmemcmp(L"abaa", L"abba", 2) == 0);
static_assert(__builtin_wmemcmp(0, 0, 0) == 0);
#if __WCHAR_WIDTH__ == 32
static_assert(__builtin_wmemcmp(L"a\x83838383", L"aa", 2) == -1);
static_assert(__builtin_wmemcmp(L"a\x83838383", L"aa", 2) ==
wchar_t(-1U) >> 31);
#endif
static_assert(__builtin_wmemcmp(L"abab\0banana", L"abab\0banana", 100) == 0); // expected-error {{not an integral constant}} expected-note {{dereferenced one-past-the-end}}
static_assert(__builtin_wmemcmp(L"abab\0banana", L"abab\0canada", 100) == -1); // FIXME: Should we reject this?