Bug#808205: libc6: Unrecognized relocation when compiling

[John Aston <johnastonsr@gmail.com>]

Package: libc6
Version: 2.21-4
Severity: important

Dear Maintainer,

When attempting to compile a simple C program, the link stage fails with an unrecognized relocation error.

This problem seems to have appeared in the latest version, 2.21-4 (and is also present in 2.22-0experimental which I tested before submitting); it was not present in 2.19-22 which I was using prior to tonight.  When using 2.19-22 (pinned to that version after installing the package from a CD), it works normally.  When upgraded, it fails as per below.

The problem manifested in a much more complicated build process, but I can duplicate it with a program as simple as this:

#include <stdio.h>
int main() {
    fprintf(stdout, "Hello, world.\n");
    return(0);
}

When compiling, the following error happens: 

$ gcc hello.c -o hello
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/crti.o: unrecognized relocation (0x2a) in section `.init'
/usr/bin/ld: final link failed: Bad value
collect2: error: ld returned 1 exit status

The expected behavior is for the program to compile normally without error.


-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.2.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libc6 depends on:
ii  libgcc1  1:5.2.1-23

libc6 recommends no packages.

Versions of packages libc6 suggests:
ii  debconf [debconf-2.0]  1.5.58
pn  glibc-doc              <none>
ii  libc-l10n              2.22-0experimental1
ii  locales                2.21-4

-- debconf information:
  glibc/disable-screensaver:
  glibc/restart-services:
  glibc/kernel-not-supported:
* libraries/restart-without-asking: true
  glibc/restart-failed:
  glibc/upgrade: true
  glibc/kernel-too-old: