26 lines · cpp
1// RUN: rm -rf %t2// RUN: mkdir -p %t3// RUN: split-file %s %t4 5// RUN: %clang_cc1 -Wno-unused-value -std=c++20 -emit-pch -o %t/header.pch %t/header.h -x c++6// RUN: %clang_cc1 -Wno-unused-value -Wunsafe-buffer-usage -std=c++20 -include-pch %t/header.pch -verify %t/main.cpp7 8//--- header.h9int foo(int *p) {10 return p[5]; // This will be warned11}12 13#pragma clang unsafe_buffer_usage begin // The opt-out region spans over two files of one TU14#include "header-2.h"15 16 17//--- header-2.h18int bar(int *p) {19 return p[5]; // suppressed by the cross-file opt-out region20}21#pragma clang unsafe_buffer_usage end22 23//--- main.cpp24// expected-warning@header.h:2 {{unsafe buffer access}}25// expected-note@header.h:2 {{pass -fsafe-buffer-usage-suggestions to receive code hardening suggestions}}26