File: warn-unsafe-buffer-usage-pragma-pch.cpp

package info (click to toggle)
llvm-toolchain-snapshot 1%3A21~%2B%2B20250612091244%2B3f0cf742ac4e-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,204,364 kB
  • sloc: cpp: 7,565,811; ansic: 1,415,365; asm: 1,031,257; python: 250,248; f90: 93,670; objc: 70,556; lisp: 41,926; pascal: 17,847; sh: 10,009; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,423; javascript: 2,272; xml: 892; fortran: 763
file content (27 lines) | stat: -rw-r--r-- 761 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
// The original example from https://github.com/llvm/llvm-project/issues/90501

// Test without PCH
// RUN: %clang_cc1 -Wno-unused-value -Wunsafe-buffer-usage -std=c++20 -include %s -verify %s
// Test with PCH
// RUN: %clang_cc1 -Wno-unused-value -std=c++20 -emit-pch -o %t %s
// RUN: %clang_cc1 -Wno-unused-value -Wunsafe-buffer-usage -std=c++20 -include-pch %t -verify %s

#ifndef A_H
#define A_H

int a(int *s) {
  s[2];  // <- expected warning here
#pragma clang unsafe_buffer_usage begin
  return s[1];
#pragma clang unsafe_buffer_usage end
}

#else
// expected-warning@-7{{unsafe buffer access}}
// expected-note@-8{{pass -fsafe-buffer-usage-suggestions to receive code hardening suggestions}}
int main() {
  int s[] = {1, 2, 3};
  return a(s);
}

#endif