[Bug gdb/14202] BFD: reopening /tmp/9501_._navl_3.0.0.32-9657_amd64_plugins_ad.plg: No such file or directory

["tbuckley at isc8 dot com" <sourceware-bugzilla@sourceware.org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=14202

--- Comment #5 from Terry Buckley <tbuckley at isc8 dot com> 2012-06-18 15:32:45 UTC ---
(In reply to comment #4)
> (In reply to comment #3)
> 
> > Why does gdb keep track of a library that has been stripped and has no
> > information? Seems like it should ignore the plugins and when the breakpoint is
> > hit it will not have the problem of "No such file or directory"
> 
> At least in my case it is reading .eh_frame:
> 
> #0  _bfd_default_error_handler (fmt=0x16cb019 "reopening %B: %s\n")
>     at ../../archer/bfd/bfd.c:587
> #1  0x0000000000994707 in bfd_cache_lookup_worker (abfd=0x2137680, 
>     flag=CACHE_NO_SEEK) at ../../archer/bfd/cache.c:227
> #2  0x00000000009947bc in cache_bseek (abfd=0x2137680, offset=1512, whence=0)
>     at ../../archer/bfd/cache.c:244
> #3  0x0000000000993d35 in bfd_seek (abfd=0x2137680, position=1512, 
>     direction=0) at ../../archer/bfd/bfdio.c:327
> #4  0x0000000000768f54 in dwarf2_read_section (objfile=0x2507ae0, info=
>     0x250fe50) at ../../archer/gdb/dwarf2read.c:1748
> #5  0x0000000000769371 in dwarf2_get_section_info (objfile=0x2507ae0, 
>     sect=DWARF2_EH_FRAME, sectp=0x2510080, bufp=0x2510070, sizep=0x2510078)
>     at ../../archer/gdb/dwarf2read.c:1855
> #6  0x00000000007aaa38 in dwarf2_build_frame_info (objfile=0x2507ae0)
>     at ../../archer/gdb/dwarf2-frame.c:2266
> #7  0x00000000007a96ea in dwarf2_frame_find_fde (pc=0x7fffffffda80, 
>     out_offset=0x0) at ../../archer/gdb/dwarf2-frame.c:1749
> #8  0x00000000007a8dd0 in dwarf2_frame_sniffer (self=0xf4f1e0, this_frame=
>     0x1fe4fd0, this_cache=0x1fe4fe8) at ../../archer/gdb/dwarf2-frame.c:1382
> #9  0x0000000000817ca5 in frame_unwind_find_by_frame (this_frame=0x1fe4fd0, 
>     this_cache=0x1fe4fe8) at ../../archer/gdb/frame-unwind.c:112
> 
> 
> One idea might be to change how the BFD caching is done:
> on "ok" systems, don't ever close the file descriptors, and on
> other systems, eagerly map all sections.

Tom,

Are you the person who would fix this problem. 

GDB needs to ignore any information from a stripped library, and never look at
it again.

GDB/BFD needs to ignore stripped libraries.

What happens next with this problem?

Terry

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