clang/test/PCH/unsafe-buffer-usage-pragma-pch-cross-files-2.cpp

   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
   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
  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}}