File: PR28469_undefined_behavior_segfault.sh.cpp

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.7-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,245,064 kB
  • sloc: cpp: 7,619,731; ansic: 1,434,018; asm: 1,058,748; python: 252,740; f90: 94,671; objc: 70,685; lisp: 42,813; pascal: 18,401; sh: 8,601; ml: 5,111; perl: 4,720; makefile: 3,676; awk: 3,523; javascript: 2,409; xml: 892; fortran: 770
file content (34 lines) | stat: -rw-r--r-- 769 bytes parent folder | download | duplicates (3) 
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
28
29
30
31
32
33
34
 
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03

// RUN: %{build} -O2
// RUN: %{run}

// <map>

// Previously this code caused a segfault when compiled at -O2 due to undefined
// behavior in __tree. See https://llvm.org/PR28469

#include <functional>
#include <map>

void dummy() {}

struct F {
  std::map<int, std::function<void()> > m;
  F() { m[42] = &dummy; }
};

int main(int, char**) {
  F f;
  f = F();

  return 0;
}