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[Bug gdb/14202] BFD: reopening/tmp/9501_._navl_3.0.0.32-9657_amd64_plugins_ad.plg: No such file ordirectory
- From: "tbuckley at isc8 dot com" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Mon, 18 Jun 2012 15:32:45 +0000
- Subject: [Bug gdb/14202] BFD: reopening/tmp/9501_._navl_3.0.0.32-9657_amd64_plugins_ad.plg: No such file ordirectory
- Auto-submitted: auto-generated
- References: <bug-14202-4717@http.sourceware.org/bugzilla/>
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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