This online article from Linux Journal magazine explains how to take advantage of some useful fuctions in the GNU C library in order to save precious memory or find nasty bugs . . .

“Dealing with dynamic memory traditionally has been one of the most awkward issues of C and C++ programming. It is not surprising that some supposedly easier languages, such as Java, have introduced garbage collection mechanisms that relieve programmers of this burden. But for hard-core C programmers, the GNU C library contains some tools that allow them to tune, check and track the usage of memory . . .”

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