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From Martin Sebor <se...@roguewave.com>
Subject Re: [jira] Closed: (STDCXX-427) SIGSEGV in istringstream::str()
Date Wed, 13 Jun 2007 14:58:37 GMT
Hi Farid,

I think the test case for this issue still needs to be added
to the regression suite. Or is it already there?

Martin

Farid Zaripov (JIRA) wrote:
>      [ https://issues.apache.org/jira/browse/STDCXX-427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
> 
> Farid Zaripov closed STDCXX-427.
> --------------------------------
> 
> 
>> SIGSEGV in istringstream::str()
>> -------------------------------
>>
>>                 Key: STDCXX-427
>>                 URL: https://issues.apache.org/jira/browse/STDCXX-427
>>             Project: C++ Standard Library
>>          Issue Type: Bug
>>          Components: 27. Input/Output
>>    Affects Versions: 4.2
>>         Environment: gcc-3.3.3 on Linux
>>            Reporter: Martin Sebor
>>            Assignee: Farid Zaripov
>>            Priority: Critical
>>             Fix For: 4.2
>>
>>
>> This only happens on trunk, not with 4.1.3:
>> $ rm t.o && cat t.cpp && make t && gdb -q t
>> #include <cassert>
>> #include <sstream>
>> #include <string>
>> int main ()
>> {
>>     using namespace std;
>>     string str ("test");
>>     
>>     istringstream isstr;
>>     
>>     isstr.str (str);
>>     assert (isstr.str ().length () == str.length ());
>>     assert (isstr.str () == str);
>> }
>> gcc -c -I/amd/devco/sebor/stdcxx/include/ansi -D_RWSTDDEBUG   -pthread -I/amd/devco/sebor/stdcxx/include
-I/build/sebor/stdcxx-gcc-3.3.3_43.41-15s/include -I/amd/devco/sebor/stdcxx/examples/include
 -pedantic -nostdinc++ -g  -m32 -W -Wall -Wcast-qual -Winline -Wshadow -Wwrite-strings -Wno-long-long
-Wcast-align   t.cpp
>> gcc t.o -o t -pthread -m32 -L/build/sebor/stdcxx-gcc-3.3.3_43.41-15s/lib  -lstd15s
-lsupc++ -lm 
>> Using host libthread_db library "/lib64/tls/libthread_db.so.1".
>> (gdb) r
>> Starting program: /build/sebor/stdcxx-gcc-3.3.3_43.41-15s/examples/t 
>> [Thread debugging using libthread_db enabled]
>> [New Thread 1433271616 (LWP 12696)]
>> Program received signal SIGSEGV, Segmentation fault.
>> [Switching to Thread 1433271616 (LWP 12696)]
>> 0x0804eb4c in __rw::__rw_memcpy (dst=0x556e1014, src=0x80900a0, 
>>     nbytes=134672708) at /amd/devco/sebor/stdcxx/src/string.cpp:42
>> 42              *tmp++ = *csrc++;
>> (gdb) where
>> #0  0x0804eb4c in __rw::__rw_memcpy (dst=0x556e1014, src=0x80900a0, 
>>     nbytes=134672708) at /amd/devco/sebor/stdcxx/src/string.cpp:42
>> #1  0x08053781 in std::char_traits<char>::copy (__dst=0x556e1014 "test", 
>>     __src=0x80900a0 "test", __n=134807716) at _traits.h:425
>> #2  0x080562ec in basic_string (this=0xffffd0d0, __s=0x80900a0 "test", 
>>     __n=134807716, __alloc=@0xffffcfc0) at string.cc:185
>> #3  0x0805dac5 in std::basic_stringbuf<char, std::char_traits<char>, std::allocator<char>
>::str (this=0xffffd048) at sstream:130
>> #4  0x08049bc9 in std::basic_istringstream<char, std::char_traits<char>,
std::allocator<char> >::str (this=0xffffd040) at sstream:268
>> #5  0x0804994d in main () at t.cpp:15
> 


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