clang/test/SemaCXX/warn-unsafe-buffer-usage-pragma-misuse.cpp

   1 // RUN: %clang_cc1 -std=c++20 -Wunsafe-buffer-usage \
   2 // RUN:            -fsafe-buffer-usage-suggestions -verify %s
   3
   4 void beginUnclosed(int * x) {
   5 #pragma clang unsafe_buffer_usage begin
   6
   7 #pragma clang unsafe_buffer_usage begin  // expected-error{{already inside '#pragma unsafe_buffer_usage'}}
   8   x++;
   9 #pragma clang unsafe_buffer_usage end
  10 }
  11
  12 void endUnopened(int *x) {
  13 #pragma clang unsafe_buffer_usage end    // expected-error{{not currently inside '#pragma unsafe_buffer_usage'}}
  14
  15 #pragma clang unsafe_buffer_usage begin
  16   x++;
  17 #pragma clang unsafe_buffer_usage end
  18 }
  19
  20 void wrongOption() {
  21 #pragma clang unsafe_buffer_usage start // expected-error{{Expected 'begin' or 'end'}}
  22 #pragma clang unsafe_buffer_usage close // expected-error{{Expected 'begin' or 'end'}}
  23 }
  24
  25 void unclosed(int * p1) {
  26 #pragma clang unsafe_buffer_usage begin
  27 // End of the included file will not raise the unclosed region warning:
  28 #define _INCLUDE_NO_WARN
  29 #include "warn-unsafe-buffer-usage-pragma.h"
  30 #pragma clang unsafe_buffer_usage end
  31
  32 // End of this file raises the warning:
  33 #pragma clang unsafe_buffer_usage begin  // expected-error{{'#pragma unsafe_buffer_usage' was not ended}}
  34 }