duma

Detect Unintended Memory Access - A Red-Zone memory allocator

Description

Open-source library to detect buffer overruns and under-runs in C and C++ programs.

This library is a fork of Bruce Perens Electric Fence library and adds some new features to it. Features of the DUMA library:

* "overloads" all standard memory allocation functions like

malloc(), calloc(), memalign(), strdup(), operator new, operator

new[] and also their counterpart deallocation functions like free(),

operator delete and operator delete[]

* utilizes the MMU (memory management unit) of the CPU:

allocates and protects an extra memory page to detect any illegal

access beyond the top of the buffer (or bottom, at the user's option)

* stops the program at exactly that instruction, which does the

erroneous access to the protected memory page,

allowing location of the defective source code in a debugger

detects erroneous writes at the non-protected end of the memory

block at deallocation of the memory block

* detects mismatch of allocation/deallocation functions: f.e.

allocation with malloc() but deallocation with operator delete

* leak detection: detect memory blocks which were not deallocated

until program exit

* preloading of the library

* allowing tests without necessity of changing source code or recompilation

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