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From "Martin Sebor (JIRA)" <j...@apache.org>
Subject [jira] Commented: (STDCXX-851) [EDG eccp/Linux] SIGSEGV in std::Init::~Init()
Date Wed, 09 Apr 2008 23:08:05 GMT

    [ https://issues.apache.org/jira/browse/STDCXX-851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12587416#action_12587416
] 

Martin Sebor commented on STDCXX-851:
-------------------------------------

Another piece of info from the debugger that might be of use -- looks like {{\_C_rdbuf}} has
an invalid value:
{noformat}
(gdb) p *this
$2 = {__vptr = 0x809912c, __v_St9basic_iosIcSt11char_traitsIcEE = {
    __b_St8ios_base = {__vptr = 0x8099140, _C_rdbuf = 0x6, _C_prec = 0, 
      _C_wide = 4098, _C_fmtfl = 0, _C_state = 0 '\0', _C_except = 0 '\0', 
      _C_usr = 0x0, _C_loc = {_C_body = 0x80a75a0}}, _C_fill = 0}}
{noformat}

> [EDG eccp/Linux] SIGSEGV in std::Init::~Init()
> ----------------------------------------------
>
>                 Key: STDCXX-851
>                 URL: https://issues.apache.org/jira/browse/STDCXX-851
>             Project: C++ Standard Library
>          Issue Type: Bug
>          Components: 27. Input/Output
>    Affects Versions: 4.2.0
>         Environment: EDG eccp 3.9/Linux
>            Reporter: Martin Sebor
>            Priority: Critical
>             Fix For: 4.2.2
>
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> After fixing STDCXX-849 a good number of tests compiled with EDG eccp 3.9 on Linx/x86
fail with a {{SIGSEGV}} like the one below:
> {noformat}
> $ make -r 21.string.io.stdcxx-250 && gdb -q 21.string.io.stdcxx-250
> eccp -c -I/home/sebor/stdcxx/include/ansi -D_RWSTDDEBUG    -I/home/sebor/stdcxx/include
-I/build/sebor/stdcxx-eccp-3.9-11s/include -I/home/sebor/stdcxx/tests/include  -A -x --template_directory=/build/sebor/stdcxx-eccp-3.9-11s/lib
-g   --display_error_number --remarks --diag_suppress 193,236,340,401,261,479,487,678,679,815
  /home/sebor/stdcxx/tests/regress/21.string.io.stdcxx-250.cpp
> eccp 21.string.io.stdcxx-250.o -o 21.string.io.stdcxx-250 -L/build/sebor/stdcxx-eccp-3.9-11s/rwtest
-lrwtest11s --template_directory=/build/sebor/stdcxx-eccp-3.9-11s/lib    -L/build/sebor/stdcxx-eccp-3.9-11s/lib
 -lstd11s  -lm 
> rm 21.string.io.stdcxx-250.o
> Using host libthread_db library "/lib64/libthread_db.so.1".
> (gdb) run
> Starting program: /build/sebor/stdcxx-eccp-3.9-11s/tests/21.string.io.stdcxx-250 
> Program received signal SIGSEGV, Segmentation fault.
> 0x08066dd7 in _ZNSo5flushEv (this=0x5ae140)
>     at /home/sebor/stdcxx/include/ostream.cc:48
> 48                      __res = this->rdbuf ()->pubsync ();
> Current language:  auto; currently c++
> Missing separate debuginfos, use: debuginfo-install gcc.i386 glibc.i686
> (gdb) where
> #0  0x08066dd7 in _ZNSo5flushEv (this=0x5ae140)
>     at /home/sebor/stdcxx/include/ostream.cc:48
> #1  0x00513b51 in std::ios_base::Init::~Init () from /usr/lib/libstdc++.so.6
> #2  0x005290f0 in ?? () from /usr/lib/libstdc++.so.6
> #3  0x008f2907 in __cxa_finalize () from /lib/libc.so.6
> #4  0x00507c54 in ?? () from /usr/lib/libstdc++.so.6
> #5  0x005a9588 in ?? () from /usr/lib/libstdc++.so.6
> #6  0x00000007 in ?? ()
> #7  0x00000282 in ?? ()
> #8  0x00507c2a in ?? () from /usr/lib/libstdc++.so.6
> #9  0x005ac5d4 in ?? () from /usr/lib/libstdc++.so.6
> #10 0xf7fde290 in ?? ()
> #11 0xff8353b8 in ?? ()
> #12 0x005831dc in ?? () from /usr/lib/libstdc++.so.6
> #13 0x00000007 in ?? ()
> #14 0x008c2fc0 in ?? () from /lib/ld-linux.so.2
> #15 0xff835448 in ?? ()
> #16 0x008b5b22 in _dl_fini () from /lib/ld-linux.so.2
> Backtrace stopped: previous frame inner to this frame (corrupt stack?)
> {noformat}

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