[Bug symtab/15350] New: GDB can't read compressed debug sections (mingw32 target)

[Bug symtab/15350] New: GDB can't read compressed debug sections (mingw32 target)

[d.g.gorbachev at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15350

             Bug #: 15350
           Summary: GDB can't read compressed debug sections (mingw32
                    target)
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: symtab
        AssignedTo: unassigned@sourceware.org
        ReportedBy: d.g.gorbachev@gmail.com
    Classification: Unclassified
            Target: mingw32


$ gcc -g 1.c
$ gdb a.exe
[...]
Reading symbols from /tmp/a.exe...done.
[...]
$ objcopy --compress-debug-sections a.exe
$ gdb a.exe
[...]
Reading symbols from /tmp/prog.exe...Can't read data for section '.debug_line'
in file '/tmp/prog.exe'
(no debugging symbols found)...done.
[...]

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[Bug symtab/15350] GDB can't read compressed debug sections (mingw32 target)

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15350

Tom Tromey <tromey at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at redhat dot com

--- Comment #1 from Tom Tromey <tromey at redhat dot com> 2013-04-09 18:14:01 UTC ---
Can you attach the .exe?

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[Bug symtab/15350] GDB can't read compressed debug sections (mingw32 target)

[d.g.gorbachev at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15350

--- Comment #2 from Dmitry Gorbachev <d.g.gorbachev at gmail dot com> 2013-04-09 23:24:22 UTC ---
Created attachment 6970
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6970
Attaching both uncompressed and compressed .exe files

$ gdb compressed.exe
[...]
Reading symbols from /tmp/compressed.exe...Can't read data for section
'.debug_info' in file '/tmp/compressed.exe'
Can't read data for section '.debug_frame' in file '/tmp/compressed.exe'
[...]
$ objcopy --decompress-debug-sections compressed.exe
objcopy:compressed.exe[.debug_aranges]: Bad value

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[Bug symtab/15350] GDB can't read compressed debug sections (mingw32 target)

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15350

--- Comment #3 from Tom Tromey <tromey at redhat dot com> 2013-04-10 14:30:14 UTC ---
The bug is in BFD, either when compressing the sections or
in the inflater.
You can see this easily using objcopy + objdump, i.e.,
not involving gdb at all.

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