Bug 6843

Summary: getaddrinfo_a segfaults
Product: glibc Reporter: Aurelien Jarno <aurelien>
Component: libcAssignee: Ulrich Drepper <drepper.fsp>
Severity: normal CC: debian-glibc, glibc-bugs
Priority: P2 Flags: fweimer: security-
Version: unspecified   
Target Milestone: ---   
Host: x86_64-unknown-linux-gnu Target: x86_64-unknown-linux-gnu
Build: x86_64-unknown-linux-gnu Last reconfirmed:

Description Aurelien Jarno 2008-08-14 20:44:34 UTC
The following code segfaults with at least glibc >= 2.7 (and CVS). It works 
correctly with versions 2.3.X. I have tested versions in between.

#define _GNU_SOURCE

#include <string.h>
#include <netdb.h>
#include <signal.h>
#include <stdio.h>

main (void)
#define N 10
  struct gaicb reqmem[N];
  struct gaicb *req[N];
  int n;

  for (n = 0; n < N; ++n)
      asprintf (&reqmem[n].ar_name, "test%d.test.redhat.com", 140 + n);
      reqmem[n].ar_service = NULL;
      reqmem[n].ar_request = NULL;
      reqmem[n].ar_result = NULL;
      req[n] = &reqmem[n];

  getaddrinfo_a (GAI_NOWAIT, req, N, NULL);
  return 0;
Comment 1 Ulrich Drepper 2008-11-01 00:19:51 UTC
Fixed in cvs.