C++ using getline() prints: pointer being freed was not allocated in XCode - c++

Question

I'm trying to use std:getline() but getting a strange runtime error:
malloc: * error for object 0x10000a720: pointer being freed was not allocated
* set a breakpoint in malloc_error_break to debug
This is the code that produces this error:
//main.cpp
#include <iostream>
#include <sstream>
int main (int argc, char * const argv[])
{
std::istringstream my_str("demo string with spaces");
std::string word;
while (std::getline(my_str, word, ' ')) {
std::cout << word << std::endl;
}
return 0;
}
Before each word I get this error. From the comments it seems to be a OSX/XCode specific error. Any hints on that?
Update:
The error is only printed in Debug mode. If I build this code in Release mode everything is fine.
Update 2:
More info on that issue can be found here.
Solution:
Set
_GLIBCXX_FULLY_DYNAMIC_STRING=1
in your Preprocessor Macros in targets info build tab.
System info:
OSX 10.6.2 | XCode 3.2 | g++ 4.2 | debug config for i386

Answer 1

At least one person has reported problems with g++ 4.2.1 on Apple that seem possibly related to yours having to do with an improper configuration of the standard library with the _GLIBCXX_FULLY_DYNAMIC_STRING definition (not that I understand any of what I'm typing here).
You might get a bit of a clue from the newsgroup thread that includes this message:
http://gcc.gnu.org/ml/gcc-bugs/2009-10/msg00807.html