28 lines · cpp
1// The original example from https://github.com/llvm/llvm-project/issues/905012 3// Test without PCH4// RUN: %clang_cc1 -Wno-unused-value -Wunsafe-buffer-usage -std=c++20 -include %s -verify %s5// Test with PCH6// RUN: %clang_cc1 -Wno-unused-value -std=c++20 -emit-pch -o %t %s7// RUN: %clang_cc1 -Wno-unused-value -Wunsafe-buffer-usage -std=c++20 -include-pch %t -verify %s8 9#ifndef A_H10#define A_H11 12int a(int *s) {13 s[2]; // <- expected warning here14#pragma clang unsafe_buffer_usage begin15 return s[1];16#pragma clang unsafe_buffer_usage end17}18 19#else20// expected-warning@-7{{unsafe buffer access}}21// expected-note@-8{{pass -fsafe-buffer-usage-suggestions to receive code hardening suggestions}}22int main() {23 int s[] = {1, 2, 3};24 return a(s);25}26 27#endif28