Debugging undebuggable application for memory corruption

Question

This is a bad situation: I have a large C++ application on Windows which is having a memory corruption.

Basically I dumped the content of a float variable and found the ASCII code of "hell" from a string elsewhere which was "hello world".

The big problem is: I can't debug it with a memory breakpoint since this is ONLY happening in release mode outside visual studio (release mode started by visual studio isn't triggering the bug, nor release with debug symbols).

Since the application is large and operates with lots of strings, I don't know how to debug it.

Do you have any idea on how to proceed?

Answer 1

Divide and conquer. printf. Patience.