help for the core dump in ::std::map

[robeson]

Hi ,
I have a core dump while access std map in sparc solaris ...
codes like below :
CItem * getItem(const string& id) { return m_mapItem[id]; }
m_mapItem defined as below :
map<string, CItem *> m_mapItem;
It is single threaded ....
every time access the map, a core generated ...

core like below :
t@9 (l@9) terminated by signal SEGV (no mapping at the fault address)
0xfdb46f14: compare+0x0010: ld [%o5 - 8], %o2
Current function is std:perator<
<char,std::char_traits<char>,std::allocator<char> >
....

::compare(0x143450, 0x0, 0xff000000, 0x274f18, 0x0, 0xb9), at

0xfdb46f14

(lhs = CLASS, rhs = CLASS), line 1685 in "string"

[3]
"functional"
[4]

,std:air<const

,CMoc*>,__rwstd::__select1st<std:air<const

,CMoc*>,std::basic_string<char,std::char_traits<char>,std::allocator<char>

,CMoc*> > >::insert(this = 0xdf878, v = STRUCT), line 195 in

"tree.cc"
[5]

,CMoc*> > >::insert(this = 0xdf878, x = STRUCT), line 237 in "map"

[6]

,CMoc*> > >:perator[](this = 0xdf878, k = CLASS), line 233 in "map"

It seems while I use mapX[] , a insert is launched and core ....
Does anybody have a clue to investigate ?
Thanks in advance !

 

[Alf P. Steinbach]

* robeson:

Hi ,
I have a core dump while access std map in sparc solaris ...
codes like below :
CItem * getItem(const string& id) { return m_mapItem[id]; }
m_mapItem defined as below :
map<string, CItem *> m_mapItem;
It is single threaded ....
every time access the map, a core generated ...

Check the FAQ item on how to post a question about Code That Does Not Work.


Cheers & hth.,

- Alf

 

[Vladimir Jovic]

Does anybody have a clue to investigate ?

This might help :
http://www.parashift.com/c++-faq-lite/how-to-post.html#faq-5.8

 

[White Wolf]

robeson wrote:
[SNIP]

It seems while I use mapX[] , a insert is launched and core ....
Does anybody have a clue to investigate ?
Thanks in advance !

Start by creating a minimal, compilable and then executable example code
results in the same crash. Veeery minimal. Preferably one short file,
no headers, only cpp (implementation). With a main function, otherwise
it won't link.

Hint: While preparing that minimal example you will most probably find
the bug yourself.

BR, WW