[Bug c++/18129] New: Segfault when reading symbols

[Bug c++/18129] New: Segfault when reading symbols

[cemkalyoncu at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18129

            Bug ID: 18129
           Summary: Segfault when reading symbols
           Product: gdb
           Version: 7.8
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
          Assignee: unassigned at sourceware dot org
          Reporter: cemkalyoncu at gmail dot com

I am experiencing segmentation fault while reading symbols. Bug #8773 is quite
similar, but I suspect different origin. This crash is not present in 7.6.50
You may access the project from BitBucket:
https://bitbucket.org/darkgazeorg/gorgon-game-engine/overview Compilation
requires cmake and opengl. You may try any unit tests in Testing/Tests/Unit
folder after compilation. 

Following is the output of the program and trying to to invoke gdb.

[cemkalyoncu@localhost Unit]$ ./UnitTest-Geometry
All tests passed (344 assertions in 13 test cases)

[cemkalyoncu@localhost Unit]$ gdb ./UnitTest-Geometry
GNU gdb (GDB) Fedora 7.8.2-38.fc21
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.                                        
Find the GDB manual and other documentation resources online at:                
<http://www.gnu.org/software/gdb/documentation/>.                               
For help, type "help".                                                          
Type "apropos word" to search for commands related to "word"...                 
Reading symbols from ./UnitTest-Geometry...Segmentation fault (core dumped)

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[Bug c++/18129] Segfault when reading symbols

[cemkalyoncu at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18129

--- Comment #1 from Cem Kalyoncu <cemkalyoncu at gmail dot com> ---
There few more information about this, I compile for 32 bits on 64 bit linux
(Fedora 21). However, I remember trying to debug 64 build with the same crash.

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[Bug c++/18129] Segfault when reading symbols

[keiths at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18129

Keith Seitz <keiths at redhat dot com> changed:

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

--- Comment #2 from Keith Seitz <keiths at redhat dot com> ---
I've downloaded and built your executable from the mercurial sources listed on
the bitbucket.org link to sourceforge. Since I do not read Turkish, the only
language the build instructions are in, I had to blindly build the library with
the build.sh script. Fortunately, that eventually spit out a library, libGGE.a,
in the "build" directory.

You say, "You may try any unit tests in Testing/Tests/Unit folder after
compilation." This directory does not exit anywhere in the tree. "Unit" does
not exist, either.

I built Tests/test.cpp, though:

$ g++ -g -m32 test.cpp -o gge-test -L../build -lGGE -lcpptest

Running this on Fedora 21 gdb, I get:

$ /usr/bin/gdb -nx -readnow test-gge
GNU gdb (GDB) Fedora 7.8.2-38.fc21
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from gge-test...expanding to full symbols...done.
(gdb) start
Temporary breakpoint 1 at 0x8049b6e: file test.cpp, line 173.
Starting program: /home/keiths/gorgon-ge-code/Tests/gge-test 
Missing separate debuginfos, use: debuginfo-install glibc-2.20-8.fc21.i686

Temporary breakpoint 1, main (argc=1, argv=0xffffcd04) at test.cpp:173
173            Test::Suite ts;
Missing separate debuginfos, use: debuginfo-install cpptest-1.1.2-3.fc21.i686
libgcc-4.9.2-6.fc21.i686 libstdc++-4.9.2-6.fc21.i686
(gdb) f
#0  main (argc=1, argv=0xffffcd04) at test.cpp:173
173            Test::Suite ts;

and I can "n" all the way through the program.

My advice: *attach* your executable to this bug report and/or run gdb under gdb
and provide a stack backtrace.

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[Bug c++/18129] Segfault when reading symbols

[cemkalyoncu at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18129

--- Comment #3 from Cem Kalyoncu <cemkalyoncu at gmail dot com> ---
I am so sorry for the confusion. We are currently working for the new version
in another branch, which has the reported problem. Branch name is gscript.

Instructions:
hg clone http://bitbucket.org/darkgazeorg/gorgon-game-engine gge
cd gge
hg up gscript
mkdir build
cd build
cmake ..
make -j8
cd ../Testing/Tests/Unit
./UnitTest-Geometry
gdb ./UnitTest-Geometry

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[Bug c++/18129] Segfault when reading symbols

[cemkalyoncu at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18129

--- Comment #4 from Cem Kalyoncu <cemkalyoncu at gmail dot com> ---
I have switched to another computer to get gdb in gdb for backtrace. Here is
the result. It seems like a stack overflow. This gdb version is different: GNU
gdb (GDB) Fedora 7.7.1-21.fc20

...
Reading symbols from ./UnitTest-Scripting...
Program received signal SIGSEGV, Segmentation fault.
0x084bc860 in d_print_comp_inner ()
gdb) bt
#0  0x084bc860 in d_print_comp_inner ()
#1  0x084c122f in d_print_subexpr ()
#2  0x084bc8e9 in d_print_comp_inner ()
#3  0x084bfd22 in d_print_comp ()
#4  0x084be9b5 in d_print_comp_inner ()
#5  0x084bfd22 in d_print_comp ()
#6  0x084bdeaf in d_print_comp_inner ()
#7  0x084bfd22 in d_print_comp ()
#8  0x084be075 in d_print_comp_inner ()
#9  0x084c0ec4 in d_print_cast.isra ()
#10 0x084bf10c in d_print_comp_inner ()
#11 0x084bfd22 in d_print_comp ()
#12 0x084bd60e in d_print_comp_inner ()
#13 0x084c12a3 in d_print_subexpr ()
#14 0x084bc92b in d_print_comp_inner ()
#15 0x084bfd22 in d_print_comp ()
#16 0x084be9b5 in d_print_comp_inner ()
#17 0x084bfd22 in d_print_comp ()
#18 0x084bdeaf in d_print_comp_inner ()
#19 0x084bfd22 in d_print_comp ()
#20 0x084be075 in d_print_comp_inner ()
#21 0x084c0ec4 in d_print_cast.isra ()
#22 0x084bf10c in d_print_comp_inner ()
#23 0x084bfd22 in d_print_comp ()
#24 0x084bd60e in d_print_comp_inner ()
#25 0x084c12a3 in d_print_subexpr ()
#26 0x084bc92b in d_print_comp_inner ()
#27 0x084bfd22 in d_print_comp ()
#28 0x084be9b5 in d_print_comp_inner ()
#29 0x084bfd22 in d_print_comp ()
#30 0x084bdeaf in d_print_comp_inner ()
#31 0x084bfd22 in d_print_comp ()
#32 0x084be075 in d_print_comp_inner ()
#33 0x084c0ec4 in d_print_cast.isra ()
#34 0x084bf10c in d_print_comp_inner ()
#35 0x084bfd22 in d_print_comp ()
#36 0x084bd60e in d_print_comp_inner ()
#37 0x084c12a3 in d_print_subexpr ()
#38 0x084bc92b in d_print_comp_inner ()
#39 0x084bfd22 in d_print_comp ()
---Type <return> to continue, or q <return> to quit---
#40 0x084be9b5 in d_print_comp_inner ()
#41 0x084bfd22 in d_print_comp ()
#42 0x084bdeaf in d_print_comp_inner ()
#43 0x084bfd22 in d_print_comp ()
....

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[Bug c++/18129] Segfault when reading symbols

[keiths at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18129

--- Comment #5 from Keith Seitz <keiths at redhat dot com> ---
Thanks -- that does it for me.

This is another demangler bug, on the symbol:

_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs

Fedora 21 gdb:
(gdb) set lang c++
(gdb) maint demangle
_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs
Segmentation fault (core dumped)

HEAD:
(gdb) set lang c++
(gdb) demangle
_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs
../../src/gdb/cp-support.c:1593: demangler-warning: unable to demangle
'_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs'
(demangler failed with signal 11)

c++filt 2.24:
$ c++filt
_ZN6Gorgon6String2ToIfEENSt9enable_ifIXaantsrSt16is_constructibleIT_ISsEE5valuentsrDTcl26gorgon__enum_trait_locatorcvS4__EEE14isupgradedenumES4_E4typeERKSs
std::enable_if<(!std::is_constructible<float<std::basic_string<char,
std::char_traits<char>, std::allocator<char> > > >::value)&&(!decltype
(gorgon__enum_trait_locator((float)()))::isupgradedenum), float>::type
Gorgon::String::To<float>(std::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&)

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[Bug c++/18129] Segfault when reading symbols

[pageexec at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18129

PaX Team <pageexec at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pageexec at gmail dot com

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