1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | #include <stdio.h>
#include <stdlib.h>
int main(int argc, char* argv[]) {
int* a = malloc(sizeof(*a) * 3);
// INVALID READ
int n = a[100];
free(a);
return EXIT_SUCCESS;
}
/*
==27550== Invalid read of size 4
==27550== at 0x4005C7: main (buffer_overread.c:9)
==27550== Address 0x4c3e1d0 is not stack'd, malloc'd or (recently) free'd
==27550==
==27550==
==27550== HEAP SUMMARY:
==27550== in use at exit: 0 bytes in 0 blocks
==27550== total heap usage: 1 allocs, 1 frees, 12 bytes allocated
==27550==
==27550== All heap blocks were freed -- no leaks are possible
*/
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */
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