[Mingw-users] unable to catch bad_alloc

[Palmer E. <the...@gm...>]

Copying from satck overflow :
http://stackoverflow.com/questions/13851244/cant-catch-bad-alloc-in-mingw

See comments there - people suggest it is a mingw bug (the title was edited
not by me)

COPY ---------------->
I am writing a program for a homework where I need to allocate many objects
to check things on locality and performance etc. I can't seem to catch the
exception thrown by `new`

    #include "List.h"
    #include<iostream>
    #include <exception>

    int main(int argc, char **argv) {
    	cout << "size of List c++ : " << sizeof(List) << endl;  //16
    	List * ptrList = new List();
    	unsigned long var = 0;
    	try {
    		for (;; ++var) {
    			List * ptrList2 = new  List();
    			ptrList->next = ptrList2;
    			ptrList2->previous = ptrList;
    			ptrList = ptrList2;
    		}
    	} catch (bad_alloc const& e) {
    		cout << "caught : " << e.what() << endl;
    //	} catch (...) { //this won't work either
    	}

Results in :

> This application has requested the Runtime to terminate it in an
> unusual way. Please contact the application's support team for more
> information.

If I change the allocation part as :


    			List * ptrList2 = new (nothrow) List();
    			if (!ptrList2) {
    				cout << "out of memory - created " << var << " nodes" << endl;
    				break;
    			}

I get a nice :

    out of memory - created 87921929 nodes

Why can't I catch `bad_alloc` ?

I am on mingwin on Windows 7 x64 Pro

    C:\Users\MrD>g++ --version
    g++ (GCC) 4.7.2

The List :

    class List {
    	long j;
    public:
    	List * next;
    	List * previous;
    	virtual long jj() {
    		return this->j;
    	}
    	List() {
    		next = previous = 0;
    		j = 0;
    	}
    	virtual ~List() {
    		if (next) {
    			next->previous = this->previous;
    		}
    		if (previous) {
    			previous->next = this->next;
    		}
    	}
    };






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