Insure++ is a memory debugger computer program, used by software developers to detect various errors in programs written in C and C++. It is made by Parasoft, and is functionally similar to other memory debuggers, such as Purify, Valgrind and Dr Memory. Overview Insure++ can automatically find erroneous accesses to freed memory (use-after-free situations), array-bounds violations, freeing unallocated memory (which often happens when a programmer frees the same memory twice, or when he frees global or stack memory), and many others. Unlike Purify and Valgrind, Insure++ inserts its instrumentation at the source-code level, which allows it to detect errors that the other tools miss. In particular, Insure++ can detect buffer overflows in automatic arrays, and overflows which involve pointers that accidentally "jump" from one valid memory region to another, as in the following example: #include <stdlib.h> int main() { char *p = malloc(1024); /* first dynamically-allocated block */ char *q = malloc(1024); /* second block */ p += 1200; /* At this point, "p" is likely to point into the second block. However, false assumptions about the real behaviour lead to mistakes. */ *p = 'a'; /* invalid write (past the end of the first block) */ } The source-level instrumentation allows it to not only identify that a leak occurred, but where it occurred. Some tools merely provide information about where the memory was allocated, Insure++ also gives a stack trace for when/where the actual leak occurred. Additionally, Insure++ will produce Linear Code Sequence and Jump Code Coverage metrics for all tested code. See also Runtime error detection Software development References External links Parasoft's Insure++ site Linux Journal review of Parasoft Insure++ Memory management software Debuggers Software testing tools