[Bug gdb/9538] gdb creates debuginfo path incorrectly for symlinked files

[Bug gdb/9538] gdb creates debuginfo path incorrectly for symlinked files

[mail at eliasprobst dot eu]

http://sourceware.org/bugzilla/show_bug.cgi?id=9538

Elias Probst <mail at eliasprobst dot eu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mail at eliasprobst dot eu

--- Comment #1 from Elias Probst <mail at eliasprobst dot eu> 2011-02-01 21:46:55 UTC ---
I can confirm this behaviour.

The crash happens in:
/usr/lib64/dri/i965_dri.so
which is a symlink to
/usr/lib64/mesa/i965_dri.so

The splitted debugging symbols reside in
/usr/lib/debug/usr/lib64/mesa/i965_dri.so.debug

GDB is only able to create backtraces when copying the debugging symbols to
/usr/lib/debug/usr/lib64/dri/i965_dri.so.debug


I thin the fix is actually rather simple: GDB should simply do a readlink() on
the path of the file which is analyzed before looking for the corresponding
debugging symbols file.

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[Bug gdb/9538] gdb creates debuginfo path incorrectly for symlinked files

[ppluzhnikov at google dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=9538

Paul Pluzhnikov <ppluzhnikov at google dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |ppluzhnikov at google dot
                   |                            |com
         AssignedTo|unassigned at sourceware    |ppluzhnikov at google dot
                   |dot org                     |com

--- Comment #2 from Paul Pluzhnikov <ppluzhnikov at google dot com> 2012-01-10 20:28:42 UTC ---
This just hit me as well:
https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/914448

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[Bug gdb/9538] gdb creates debuginfo path incorrectly for symlinked files

[ppluzhnikov at google dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=9538

Paul Pluzhnikov <ppluzhnikov at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unknown                     |HEAD
   Target Milestone|---                         |7.4

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[Bug gdb/9538] gdb creates debuginfo path incorrectly for symlinked files

[cvs-commit at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=9538

--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2012-01-18 18:58:46 UTC ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    ppluzhnikov@sourceware.org    2012-01-18 18:58:43

Modified files:
    gdb            : ChangeLog symfile.c configure.ac configure 
                     config.in 
    gdb/testsuite  : ChangeLog 
    gdb/testsuite/gdb.base: sepdebug.exp 

Log message:
    2012-01-18  Paul Pluzhnikov  <ppluzhnikov@google.com>
    Jan Kratochvil  <jan.kratochvil@redhat.com>

    PR gdb/9538
    * symfile.c (find_separate_debug_file): New function.
    (terminate_after_last_dir_separator): Likewise.
    (find_separate_debug_file_by_debuglink): Also try realpath.
    * configure.ac (AC_CHECK_FUNCS): Add lstat.
    * configure: Regenerate.
    * config.in: Regenerate.

    testsuite/ChangeLog:

    2012-01-18  Paul Pluzhnikov  <ppluzhnikov@google.com>

    PR gdb/9538
    * gdb.base/sepdebug.exp: New test.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.13747&r2=1.13748
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/symfile.c.diff?cvsroot=src&r1=1.325&r2=1.326
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/configure.ac.diff?cvsroot=src&r1=1.153&r2=1.154
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/configure.diff?cvsroot=src&r1=1.338&r2=1.339
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/config.in.diff?cvsroot=src&r1=1.131&r2=1.132
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.3026&r2=1.3027
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.base/sepdebug.exp.diff?cvsroot=src&r1=1.34&r2=1.35

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[Bug gdb/9538] gdb creates debuginfo path incorrectly for symlinked files

[ppluzhnikov at google dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=9538

Paul Pluzhnikov <ppluzhnikov at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #4 from Paul Pluzhnikov <ppluzhnikov at google dot com> 2012-01-18 19:02:48 UTC ---
Fixed in trunk.

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