[Bug c++/17267] New: Reading symbols from "program" segmentation fault

[Bug c++/17267] New: Reading symbols from "program" segmentation fault

[dongfuye at 163 dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17267

            Bug ID: 17267
           Summary: Reading symbols from  "program" segmentation fault
           Product: gdb
           Version: 7.7
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
          Assignee: unassigned at sourceware dot org
          Reporter: dongfuye at 163 dot com

Created attachment 7746
  --> https://sourceware.org/bugzilla/attachment.cgi?id=7746&action=edit
the program and core

GNU gdb (Ubuntu 7.7-0ubuntu3.1) 7.7
Reading symbols from chat...[1]    2479 segmentation fault  gdb chat

g++ (Ubuntu 4.8.2-19ubuntu1) 4.8.2

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[Bug c++/17267] Reading symbols from "program" segmentation fault

[dongfuye at 163 dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17267

dongfuye at 163 dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dongfuye at 163 dot com

--- Comment #1 from dongfuye at 163 dot com ---
I write a library, many program use this library will make gdb coredump

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[Bug c++/17267] Reading symbols from "program" segmentation fault

[gbenson at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17267

Gary Benson <gbenson at redhat dot com> changed:

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

--- Comment #2 from Gary Benson <gbenson at redhat dot com> ---
This is filed this as a C++ bug, but the crash I'm seeing is in
f_type_print_varspec_suffix.  Is part of your program written in Fortran?

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[Bug c++/17267] Reading symbols from "program" segmentation fault

[dongfuye at 163 dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17267

--- Comment #3 from dongfuye at 163 dot com ---
no fortran. only c++11. I can send you the source code if it may help.

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[Bug c++/17267] Reading symbols from "program" segmentation fault

[dongfuye at 163 dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17267

--- Comment #4 from dongfuye at 163 dot com ---
interestingly，gdb 7.6 do not core

i copy a gdb from centos7 to my ubuntu. it can read the same program.

well functioned gdb is:
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-51.el7

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From: "dongfuye at 163 dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/17267] Reading symbols from  "program" segmentation fault
Date: Fri, 15 Aug 2014 13:53:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id\x17267

--- Comment #5 from dongfuye at 163 dot com ---
this problem is quite annoying. although gdb 7.6 do not core, but sometimes it
cannot show the variable value in lamda functions.

i think the bug maybe caused be lamda functions.

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[Bug c++/17267] Reading symbols from "program" segmentation fault

[gbenson at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17267

--- Comment #6 from Gary Benson <gbenson at redhat dot com> ---
It might help if you could try building the latest git gdb and see what that
does (http://www.gnu.org/software/gdb/current/).  Some improvements went in
recently relating to C++11 symbol demangling so you might have better luck with
that.

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[Bug c++/17267] Reading symbols from "program" segmentation fault

[dongfuye at 163 dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17267

--- Comment #7 from dongfuye at 163 dot com ---
i try the latest gdb -- 7.8. it does not core.
i spend more time to do some experiment, and found that gdb could not print out
variable values in lamda function which is in constructors. it seems to work
well for lamda functions which is not in constructors.

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[Bug c++/17267] Reading symbols from "program" segmentation fault

[gbenson at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17267

--- Comment #8 from Gary Benson <gbenson at redhat dot com> ---
If 7.8 is completely working then could you close this bug please?

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[Bug c++/17267] Reading symbols from "program" segmentation fault

[dongfuye at 163 dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17267

dongfuye at 163 dot com changed:

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

--- Comment #9 from dongfuye at 163 dot com ---
gdb 7.8 works

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