diff options
Diffstat (limited to 'clang/test/AST/ByteCode/builtin-functions.cpp')
| -rw-r--r-- | clang/test/AST/ByteCode/builtin-functions.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/clang/test/AST/ByteCode/builtin-functions.cpp b/clang/test/AST/ByteCode/builtin-functions.cpp index e2121a5..4c21496 100644 --- a/clang/test/AST/ByteCode/builtin-functions.cpp +++ b/clang/test/AST/ByteCode/builtin-functions.cpp @@ -15,6 +15,10 @@ #error "huh?" #endif +extern "C" { + typedef decltype(sizeof(int)) size_t; + extern size_t wcslen(const wchar_t *p); +} namespace strcmp { constexpr char kFoobar[6] = {'f','o','o','b','a','r'}; @@ -93,6 +97,14 @@ constexpr const char *a = "foo\0quux"; constexpr char d[] = { 'f', 'o', 'o' }; // no nul terminator. constexpr int bad = __builtin_strlen(d); // both-error {{constant expression}} \ // both-note {{one-past-the-end}} + + constexpr int wn = __builtin_wcslen(L"hello"); + static_assert(wn == 5); + constexpr int wm = wcslen(L"hello"); // both-error {{constant expression}} \ + // both-note {{non-constexpr function 'wcslen' cannot be used in a constant expression}} + + int arr[3]; // both-note {{here}} + int wk = arr[wcslen(L"hello")]; // both-warning {{array index 5}} } namespace nan { |