[Bug 341532] Re: libc6-dbg has broken 32 bit symbols on x86_64

[Rolf Leggewie]

Hardy has seen the end of its life and is no longer receiving any
updates. Marking the Hardy task for this ticket as "Won't Fix".

** Changed in: glibc (Ubuntu Hardy)
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/341532

Title:
  libc6-dbg has broken 32 bit symbols on x86_64

Status in “glibc” package in Ubuntu:
  Fix Released
Status in “glibc” source package in Hardy:
  Won't Fix
Status in “glibc” source package in Intrepid:
  Invalid

Bug description:
  Binary package hint: libc6-dbg

  On Ubuntu 8.10, gdb and valgrind cannot show line numbers and 
  filenames for functions in glibc for 32 bit programs on 64 bit systems, 
  even if libc6-dbg is installed.

  You can see this by setting a breakpoint on some function
  in glibc, running, and then getting a backtrace.

  Here's a script I wrote to demonstrate the problem.  It assumes
  you have valgrind and libc6-dbg installed.  (You don't need
  valgrind to be affected by the problem, but that's where I
  ran into it first.)  On a good system, it outputs
  "Worked!  No bug found".

  ---- snip ----

  #!/bin/sh
  set -e
  set -x

  case `uname -m` in
  x86_64) ;;
  *) echo "This test is for x86_64 machines"; exit 1;;
  esac

  cat > leak.c <<_EOF_
  #include <stdio.h>
  #include <malloc.h>
  int main(int argc, char **argv)
  {
    struct addrinfo *ai;
    int err = getaddrinfo(NULL, "http", NULL, &ai);
    printf("err %d, ai %p\n", err, ai);
  }
  _EOF_

  for size in 64 32
  do
     gcc -g -m$size leak.c -o leak$size
     valgrind --leak-check=full ./leak$size > leak$size.log 2>&1 || true
     if ! grep -q "getaddrinfo.c:" leak$size.log
     then
         echo "No symbolic backtrace in $size bits; do you need to
  install libc6-dbg?"
         exit 1
     fi
  done

  echo "Worked!  No bug found."

  ---- snip ----

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