File: cxa_atexit.cpp

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (28 lines) | stat: -rw-r--r-- 520 bytes parent folder | download | duplicates (19) 
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
 
// RUN: %clangxx_msan -fno-sanitize-memory-param-retval -O0 %s -o %t && %run %t %p

// PR17377: C++ module destructors get stale argument shadow.

#include <stdio.h>
#include <stdlib.h>
class A {
public:
  // This destructor get stale argument shadow left from the call to f().
  ~A() {
    if (this)
      exit(0);
  }
};

A a;

__attribute__((noinline))
void f(long x) {
}

int main(void) {
  long  x;
  long * volatile p = &x;
  // This call poisons TLS shadow for the first function argument.
  f(*p);
  return 0;
}