misc/152293: SEGV in libstdc++.so.6
>Number: 152293
>Category: misc
>Synopsis: SEGV in libstdc++.so.6
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Nov 16 12:00:19 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator: kenorb
>Release: FreeBSD 8.1-STABLE
>Organization:
>Environment:
FreeBSD kenorb 8.1-STABLE FreeBSD 8.1-STABLE #4: Mon Nov 15 14:40:15 GMT 2010 root@kenorb:/usr/obj/usr/src/sys/BRO amd64
>Description:
libstdc++.so.6 doing SEGV when run mysql-workbench-bin
#1 0x0000000808dc9bc1 in std::char_traits<char>::length (__s=0x0) at char_traits.h:258
#2 0x0000000808dcbe15 in std::string::assign (this=0x7fffffffe4b0, __s=0x0) at basic_string.h:920
#3 0x0000000808dcbe45 in std::string::operator= (this=0x7fffffffe4b0, __s=0x0) at basic_string.h:499
Backtrace:
(gdb) bt full
#0 0x00000008092c05b7 in strlen () from /lib/libc.so.7
#1 0x0000000808dc9bc1 in std::char_traits<char>::length (__s=0x0) at char_traits.h:258
#2 0x0000000808dcbe15 in std::string::assign (this=0x7fffffffe4b0, __s=0x0) at basic_string.h:920
#3 0x0000000808dcbe45 in std::string::operator= (this=0x7fffffffe4b0, __s=0x0) at basic_string.h:499
#4 0x000000000070a87a in main (argc=1, argv=0x7fffffffe768) at main.cpp:113
It should not pass NULL into libc.
See more: http://forums.freebsd.org/showthread.php?t=19387
>How-To-Repeat:
> mysql-workbench-bin
Segmentation fault
>Fix:
Check if __s is NULL?
#2 0x0000000808dcbe15 in std::string::assign (this=0x7fffffffe4b0, __s=0x0) at basic_string.h:920
/**
* @brief Set value to contents of a C string.
* @param s The C string to use.
* @return Reference to this string.
*
* This function sets the value of this string to the value of @a s.
* The data is copied, so there is no dependence on @a s once the
* function returns.
*/
basic_string&
assign(const _CharT* __s)
{
__glibcxx_requires_string(__s);
return this->assign(__s, traits_type::length(__s));
#1 0x0000000808dc9bc1 in std::char_traits<char>::length (__s=0x0) at char_traits.h:258
static size_t
length(const char_type* __s)
{ return strlen(__s); }
>Release-Note:
>Audit-Trail:
>Unformatted:
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