[Bug symtab/15691] New: gdb crash from "Stay in DWO optimization"

[Bug symtab/15691] New: gdb crash from "Stay in DWO optimization"

[dje at google dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15691

            Bug ID: 15691
           Summary: gdb crash from "Stay in DWO optimization"
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: symtab
          Assignee: unassigned at sourceware dot org
          Reporter: dje at google dot com

When debugging a program with a mix of fission and non-fission object files,
gdb can crash here:

../../gdb-7.6.x/gdb/dwarf2read.c:4482: internal-error:
fill_in_sig_entry_from_dwo_entry: Assertion `sig_entry->per_cu.v.quick->symtab
== NULL' failed.

This happens when a TU from a non-DWO file is read first, and then gdb reads
debug info from a DWO file.  gdb thinks the debug info hasn't been read yet
when in fact it has.

[patch,testcase to follow]

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/15691] gdb crash from "Stay in DWO optimization"

[dje at google dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15691

--- Comment #1 from dje at google dot com ---
patch submitted here:
http://sourceware.org/ml/gdb-patches/2013-06/msg00840.html

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/15691] gdb crash from "Stay in DWO optimization"

[cvs-commit at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=15691

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    devans@sourceware.org    2013-08-02 00:33:07

Modified files:
    gdb            : ChangeLog dwarf2read.c 
    gdb/testsuite  : ChangeLog 
Added files:
    gdb/testsuite/gdb.dwarf2: fission-mix.c fission-mix.exp 
                              fission-mix.h fission-mix2.c 

Log message:
    PR symtab/15691
    * dwarf2read.c (struct dwarf2_per_cu_data): New member tu_read.
    (fill_in_sig_entry_from_dwo_entry): Reorganize asserts.
    Add assert of sig_entry->dwo_unit == NULL.
    (lookup_dwo_signatured_type): Don't assign TU to a DWO if the TU
    had already been read.
    (read_signatured_type): Set per_cu.tu_read.

    testsuite/
    * gdb.dwarf2/fission-mix.exp: New file.
    * gdb.dwarf2/fission-mix.h: New file.
    * gdb.dwarf2/fission-mix.c: New file.
    * gdb.dwarf2/fission-mix2.c: New file.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.15858&r2=1.15859
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2read.c.diff?cvsroot=src&r1=1.820&r2=1.821
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.3756&r2=1.3757
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/fission-mix.c.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/fission-mix.exp.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/fission-mix.h.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/fission-mix2.c.diff?cvsroot=src&r1=NONE&r2=1.1

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug symtab/15691] gdb crash from "Stay in DWO optimization"

[ssbssa at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=15691

Hannes Domani <ssbssa at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
   Target Milestone|---                         |7.7
                 CC|                            |ssbssa at sourceware dot org
         Resolution|---                         |FIXED

--- Comment #3 from Hannes Domani <ssbssa at sourceware dot org> ---
Fixed since gdb-7.7.

-- 
You are receiving this mail because:
You are on the CC list for the bug.