[Bug 1567219] Re: Valgrind does not support compressed debug info

[Frank Heimes]

** Changed in: ubuntu-z-systems
       Status: Fix Committed => Fix Released

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Title:
  Valgrind does not support compressed debug info

Status in Ubuntu on IBM z Systems:
  Fix Released
Status in Valgrind:
  Fix Released
Status in valgrind package in Ubuntu:
  Fix Released

Bug description:
  == Comment: #0 - Andreas Arnez <arnez at de.ibm.com> - 2016-04-01 12:23:20 ==
  It seems that some Ubuntu debug packages are built with compressed debug info, which is not supported by Valgrind.  In particular I've seen that this even applies to the dynamic loader (when libc6-dbg is installed):

  $ ./vg-in-place /bin/true
  ==5907== Memcheck, a memory error detector
  ==5907== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
  ==5907== Using Valgrind-3.12.0.SVN and LibVEX; rerun with -h for copyright info
  ==5907== Command: /bin/true
  ==5907== 
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/ld-2.23.so:
  --5907-- Ignoring non-Dwarf2/3/4 block in .debug_info
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/ld-2.23.so:
  --5907-- Ignoring non-Dwarf2/3/4 block in .debug_info
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/ld-2.23.so:
  --5907-- Ignoring non-Dwarf2/3/4 block in .debug_info
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/ld-2.23.so:
  --5907-- Last block truncated in .debug_info; ignoring
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/ld-2.23.so:
  --5907-- parse_CU_Header: is neither DWARF2 nor DWARF3 nor DWARF4
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/libc-2.23.so:
  --5907-- Ignoring non-Dwarf2/3/4 block in .debug_info
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/libc-2.23.so:
  --5907-- Ignoring non-Dwarf2/3/4 block in .debug_info
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/libc-2.23.so:
  --5907-- Ignoring non-Dwarf2/3/4 block in .debug_info
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/libc-2.23.so:
  --5907-- Last block truncated in .debug_info; ignoring
  --5907-- WARNING: Serious error when reading debug info
  --5907-- When reading debug info from /lib/s390x-linux-gnu/libc-2.23.so:
  --5907-- parse_CU_Header: is neither DWARF2 nor DWARF3 nor DWARF4
  ==5907== 
  ==5907== HEAP SUMMARY:
  ==5907==     in use at exit: 0 bytes in 0 blocks
  ==5907==   total heap usage: 0 allocs, 0 frees, 0 bytes allocated
  ==5907== 
  ==5907== All heap blocks were freed -- no leaks are possible
  ==5907== 
  ==5907== For counts of detected and suppressed errors, rerun with: -v
  ==5907== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)

  == Comment: #1 - Andreas Arnez <arnez at de.ibm.com> - 2016-04-01 12:26:28 ==
  Note that this issue should apply to all platforms.  It has already been reported for upstream Valgrind, and a patch has been proposed:

    https://bugs.kde.org/show_bug.cgi?id=303877

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