xref: /llvm-project/clang/test/PCH/unsafe-buffer-usage-pragma-pch-cross-files-2.cpp (revision 2e7b95e4c080426e5085c38cec01176b56798534) 
1 // RUN: rm -rf %t
2 // RUN: mkdir -p %t
3 // RUN: split-file %s %t
4 
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.cpp
7 
8 //--- header.h
foo(int * p)9 int foo(int *p) {
10   return p[5];  // This will be warned
11 }
12 
13 #pragma clang unsafe_buffer_usage begin // The opt-out region spans over two files of one TU
14 #include "header-2.h"
15 
16 
17 //--- header-2.h
bar(int * p)18 int bar(int *p) {
19   return p[5];  // suppressed by the cross-file opt-out region
20 }
21 #pragma clang unsafe_buffer_usage end
22 
23 //--- main.cpp
24 // 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