minix/external/bsd/llvm/dist/clang/test/SemaCXX/constexpr-strlen.cpp
Lionel Sambuc f4a2713ac8 Importing netbsd clang -- pristine
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
2014-07-28 17:05:57 +02:00

15 lines
605 B
C++

// RUN: %clang_cc1 %s -std=c++11 -fsyntax-only -verify -pedantic
# 1 "/usr/include/string.h" 1 3 4
extern "C" {
typedef decltype(sizeof(int)) size_t;
extern size_t strlen(const char *p);
}
# 10 "SemaCXX/constexpr-strlen.cpp" 2
constexpr int n = __builtin_strlen("hello"); // ok
constexpr int m = strlen("hello"); // expected-error {{constant expression}} expected-note {{non-constexpr function 'strlen' cannot be used in a constant expression}}
// Make sure we can evaluate a call to strlen.
int arr[3]; // expected-note {{here}}
int k = arr[strlen("hello")]; // expected-warning {{array index 5}}