Richard Smith | 40b993a | 2012-01-18 03:06:12 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 %s -std=c++11 -fsyntax-only -verify -pedantic |
| 2 | |
| 3 | # 1 "/usr/include/string.h" 1 3 4 |
| 4 | extern "C" { |
| 5 | typedef decltype(sizeof(int)) size_t; |
| 6 | extern size_t strlen(const char *p); |
| 7 | } |
| 8 | |
| 9 | # 10 "SemaCXX/constexpr-strlen.cpp" 2 |
| 10 | constexpr int n = __builtin_strlen("hello"); // ok |
| 11 | constexpr int m = strlen("hello"); // expected-error {{constant expression}} expected-note {{non-constexpr function 'strlen' cannot be used in a constant expression}} |
| 12 | |
| 13 | // Make sure we can evaluate a call to strlen. |
| 14 | int arr[3]; // expected-note {{here}} |
| 15 | int k = arr[strlen("hello")]; // expected-warning {{array index 5}} |