xref: /llvm-project/clang/test/SemaCXX/warn-unsafe-buffer-usage-pragma-misuse.cpp (revision b49ce9c304b00dae49148b6a2f5f27965000206c) 
1 // RUN: %clang_cc1 -std=c++20 -Wunsafe-buffer-usage \
2 // RUN:            -fsafe-buffer-usage-suggestions -verify %s
3 
beginUnclosed(int * x)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 
endUnopened(int * x)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 
wrongOption()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 
unclosed(int * p1)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 }
35