[Bug web/18330] Upgrade Sourceware Bugzilla to 5.0

[Bug web/18330] Upgrade Sourceware Bugzilla to 5.0

[LpSolit at netscape dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=18330

--- Comment #1 from Frédéric Buclin <LpSolit at netscape dot net> ---
Created attachment 8272
  --> https://sourceware.org/bugzilla/attachment.cgi?id=8272&action=edit
Sourceware patch for 5.0, v1

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Subject: [Bug web/18330] Upgrade Sourceware Bugzilla to 5.0
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https://sourceware.org/bugzilla/show_bug.cgi?id=18330

Frédéric Buclin <LpSolit at netscape dot net> changed:

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

--- Comment #2 from Frédéric Buclin <LpSolit at netscape dot net> ---
Done!

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From: "jutaky at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/18331] New: Segfault after reading symbols from a fuzzed
 (corrupted) binary
Date: Sun, 26 Apr 2015 11:19:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id\x18331

            Bug ID: 18331
           Summary: Segfault after reading symbols from a fuzzed
                    (corrupted) binary
           Product: gdb
           Version: 7.9
            Status: NEW
          Severity: critical
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: jutaky at gmail dot com
  Target Milestone: ---

Version: GNU gdb (GDB) 7.9.50.20150426-cvs

My previous submission may or may not offer insight, it looked similar:
https://sourceware.org/bugzilla/show_bug.cgi?id\x15827

Test case: http://jutaky.com/fuzzing/gdb_case_25080_20444.bin

Very long backtrace. Here's part of it:

Reading symbols from gdb_case_25080_20444.bin...done.

Program received signal SIGSEGV, Segmentation fault.
0x0000000000842863 in htab_find (htab=0x14c6fc0, element=0x7fffff7ff030) at
./hashtab.c:622
622       return htab_find_with_hash (htab, element, (*htab->hash_f)
(element));
(gdb) bt
#0  0x0000000000842863 in htab_find (htab=0x14c6fc0, element=0x7fffff7ff030) at
./hashtab.c:622
#1  0x0000000000653ef3 in get_die_type_at_offset (offset=..., per_cu=0x1090260)
at dwarf2read.c:22162
#2  0x000000000064d198 in lookup_die_type (die=0x14b2920, attr=0x14b2958,
cu=0x14a9a10) at dwarf2read.c:18806
#3  0x000000000064cd58 in die_type (die=0x14b2920, cu=0x14a9a10) at
dwarf2read.c:18688
#4  0x000000000064317f in read_tag_pointer_type (die=0x14b2920, cu=0x14a9a10)
at dwarf2read.c:14183
#5  0x000000000064d410 in read_type_die_1 (die=0x14b2920, cu=0x14a9a10) at
dwarf2read.c:18900
#6  0x000000000064d337 in read_type_die (die=0x14b2920, cu=0x14a9a10) at
dwarf2read.c:18866
#7  0x000000000064d2be in lookup_die_type (die=0x14b2920, attr=0x14b2958,
cu=0x14a9a10) at dwarf2read.c:18838
#8  0x000000000064cd58 in die_type (die=0x14b2920, cu=0x14a9a10) at
dwarf2read.c:18688
#9  0x000000000064317f in read_tag_pointer_type (die=0x14b2920, cu=0x14a9a10)
at dwarf2read.c:14183
#10 0x000000000064d410 in read_type_die_1 (die=0x14b2920, cu=0x14a9a10) at
dwarf2read.c:18900

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[Bug web/18330] Upgrade Sourceware Bugzilla to 5.0

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18330

H.J. Lu <hjl.tools at gmail dot com> changed:

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

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
git commit no longer updates bugzilla:

https://sourceware.org/git/?p=glibc.git;a=commit;h=5cffc05ed5c7fea312f2822d388afc025d03c08a

and

https://sourceware.org/bugzilla/show_bug.cgi?id=18333

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[Bug web/18330] Upgrade Sourceware Bugzilla to 5.0

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18330

Frank Ch. Eigler <fche at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fche at redhat dot com

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[Bug web/18330] Upgrade Sourceware Bugzilla to 5.0

[LpSolit at netscape dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=18330

--- Comment #4 from Frédéric Buclin <LpSolit at netscape dot net> ---
Is there any evidence that the email is correctly sent to Bugzilla (more
exactly: email_in.pl)? If not, then the bug in not on the Bugzilla side. If
yes, then having a copy of the email sent would help debug the problem. fche?

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From: "LpSolit at netscape dot net" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug web/18330] Upgrade Sourceware Bugzilla to 5.0
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https://sourceware.org/bugzilla/show_bug.cgi?id=18330

Frédéric Buclin <LpSolit at netscape dot net> changed:

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

--- Comment #5 from Frédéric Buclin <LpSolit at netscape dot net> ---
>From what I can see in the log file, the email never reached Bugzilla, so
someone should look on the git side.

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From: "martin.galvan at tallertechnologies dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/18339] gdb.FinishBreakpoint is broken for inline
 functions
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https://sourceware.org/bugzilla/show_bug.cgi?id\x18339

--- Comment #1 from Martin Galvan <martin.galvan at tallertechnologies dot com> ---
I did some more testing with -O3-compiled code, and noticed that sometimes the
compiler will scatter instructions belonging to an inline function all over the
caller function. After doing an objdump of my binary, I found out that the
DW_TAG_inlined_subroutine DIE has a DW_AT_ranges attribute which points at the
.debug_ranges section. Looking at the ranges list stored there I noticed we
could, theoretically, place a (software?) breakpoint at the addresses past the
end of each range, thus delimiting the inline function and stopping
out_of_scope from triggering. I don't have time to code it myself right now,
though.

Now, a question: does the Python API offer any way to get the end of the
current range for an optimized inline function? I tried using gdb.Block's end
attribute, but that gives an incorrect address.

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[Bug web/18330] Upgrade Sourceware Bugzilla to 5.0

[LpSolit at netscape dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=18330

Frédéric Buclin <LpSolit at netscape dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #8272|0                           |1
        is obsolete|                            |

--- Comment #6 from Frédéric Buclin <LpSolit at netscape dot net> ---
Created attachment 8317
  --> https://sourceware.org/bugzilla/attachment.cgi?id=8317&action=edit
Sourceware patch for 5.0, v2

Now includes the Sourceware favicon instead of the default Bugzilla one.

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From: "dje at google dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/18416] New: parse full c++ scope even if current language
 is c?
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https://sourceware.org/bugzilla/show_bug.cgi?id\x18416

            Bug ID: 18416
           Summary: parse full c++ scope even if current language is c?
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: minor
          Priority: P2
         Component: c++
          Assignee: unassigned at sourceware dot org
          Reporter: dje at google dot com
  Target Milestone: ---

this won't generalize very well, but for the particular case of c/c++ this may
be useful.

c-exp.y:yylex early exits if the parse language is not c++.

  if (parse_language (pstate)->la_language != language_cplus
      || (current.token != TYPENAME && current.token != COLONCOLON
          && current.token != FILENAME))
    return current.token;

this means, for example, that if one is stopped inside a c function and one
does "p std::cerr" that the full text of "std::cerr" will not be parsed.
it also means that gdb will do a (pointless) symbol lookup of "cerr".

a conservative route could be to also check if the current language was c.
haven't dug into whether anything will break.
i saw a modest perf improvement for "p std::cerr" in my testcase.
dunno how general an improvement this would be.

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