Mtrace
mtrace is the memory debugger included in the GNU C Library.
Good Source Code
The following is an example of good source code. It releases memory after it is allocated, and it uses mtrace to notify the programmer if there are memory leaks.
#include <stdlib.h>
#include <mcheck.h>
int main(void) {
mtrace(); /* Starts the recording of memory allocations and releases */
int* a = NULL;
a = malloc(sizeof(int)); /* allocate memory and assign it to the pointer */
if (a == NULL) {
return 1; /* error */
}
free(a); /* we free the memory we allocated so we don't have leaks */
muntrace();
return 0; /* exit */
}