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sudo apt-get install valgrind
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#include <stdio.h> #include <stdlib.h> void create_array(int length) { int* array = malloc(length * sizeof(int)); for (int i = 0; i < length; i++) { array[i] = i + 1; } } int main() { create_array(100); return 0; }
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valgrind --leak-check=full ./a.out
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==18708== Memcheck, a memory error detector ==18708== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==18708== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info ==18708== Command: ./a.out ==18708== ==18708== ==18708== HEAP SUMMARY: ==18708== in use at exit: 400 bytes in 1 blocks ==18708== total heap usage: 1 allocs, 0 frees, 400 bytes allocated ==18708== ==18708== 400 bytes in 1 blocks are definitely lost in loss record 1 of 1 ==18708== at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==18708== by 0x40059D: create_array (main.c:6) ==18708== by 0x4005A8: main (main.c:11) ==18708== ==18708== LEAK SUMMARY: ==18708== definitely lost: 400 bytes in 1 blocks ==18708== indirectly lost: 0 bytes in 0 blocks ==18708== possibly lost: 0 bytes in 0 blocks ==18708== still reachable: 0 bytes in 0 blocks ==18708== suppressed: 0 bytes in 0 blocks ==18708== ==18708== For counts of detected and suppressed errors, rerun with: -v ==18708== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
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