File: reexec_unlimited_stack.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 (23 lines) | stat: -rw-r--r-- 553 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
 
// MSAN re-execs on unlimited stacks. We use that to verify ReExec() uses the
// right path.
// RUN: %clangxx_msan -O0 %s -o %t && ulimit -s unlimited && %run %t | FileCheck %s

#include <stdio.h>

#if !defined(__GLIBC_PREREQ)
#define __GLIBC_PREREQ(a, b) 0
#endif

#if __GLIBC_PREREQ(2, 16)
#include <sys/auxv.h>
#endif

int main() {
#if __GLIBC_PREREQ(2, 16)
  // Make sure AT_EXECFN didn't get overwritten by re-exec.
  puts(reinterpret_cast<const char *>(getauxval(AT_EXECFN)));
#else
  puts("No getauxval");
#endif
  // CHECK-NOT: /proc/self/exe
}