[Bug symtab/14931] New: GDB fails to read minsyms if debug info reading fails.

["palves at redhat dot com" <sourceware-bugzilla@sourceware.org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14931

             Bug #: 14931
           Summary: GDB fails to read minsyms if debug info reading fails.
           Product: gdb
           Version: 7.0
            Status: NEW
          Severity: normal
          Priority: P2
         Component: symtab
        AssignedTo: unassigned@sourceware.org
        ReportedBy: palves@redhat.com
    Classification: Unclassified


Trying to check gdb's behavior in a previous release, I did:

$ ~/gdb/7_0/build/gdb/gdb -nx ./gdb/gdb
GNU gdb (GDB) 7.0.1.20091231-cvs
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/pedro/gdb/mygit/build/gdb/gdb...Dwarf Error: wrong
version in compilation unit header (is 4, should be 2) [in module
/home/pedro/gdb/mygit/build/gdb/gdb]
(gdb) 

The old GDB didn't understand dwarf 4, so it bailed out, but it also didn't
load the minsyms, while it could.  I think it should:

(gdb) b main
No symbol table is loaded.  Use the "file" command.
Make breakpoint pending on future shared library load? (y or [n]) 

$ nm -A ./gdb/gdb | grep "T main$"
./gdb/gdb:0000000000457b4c T main

I haven't tried current mainline's behavior.

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