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

["tromey at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

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

--- Comment #4 from Tom Tromey <tromey at redhat dot com> 2012-06-13 19:17:49 UTC ---
(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.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.