Hi,
I am having troubles finding memory leaks and array over shoots with valgrind
on android.
I have a binary that intentionally leaks few bytes. When I run the binary in
valgrind environment on an android phone (adb shell), I see valgrind reporting
no errors.
Please help me understand if I am missing any. I compiled valgrind that came
with android release under external directory (git clone
https://android.googlesource.com/platform/external/valgrind)
My program:
--------------
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int main(int argc, char** argv) {
int i = 0;
char *leak = (char *) malloc(10);
char *noleak = (char *)malloc(20);
free(noleak);
noleak = NULL;
return 0;
}
Name of the executable: sample
Output from valgrind:
------------------------
@android:/system/bin # ./valgrind --leak-check=full --tool=memcheck -v sample
==268== Memcheck, a memory error detector
==268== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==268== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==268== Command: sample
==268==
--268-- Valgrind options:
--268-- --leak-check=full
--268-- --tool=memcheck
--268-- -v
--268-- Contents of /proc/version:
--268-- Linux version 3.4.42-eng-gcd82698-00002-g6497f5b (gcc version 4.7
(GCC) ) #1 SMP PREEMPT Wed May 21 17:30:16 IST 2014
--268-- Arch and hwcaps: ARM, ARMv7-vfp-neon
--268-- Page sizes: currently 4096, max supported 4096
--268-- Valgrind library directory: /system/lib/valgrind
--268-- Reading syms from /system/bin/sample
--268-- Considering /system/bin/sample ..
--268-- .. CRC mismatch (computed 918c9dfe wanted cde23cf7)
--268-- object doesn't have a symbol table
--268-- object doesn't have a dynamic symbol table
--268-- Reading syms from /system/lib/valgrind/memcheck-arm-linux
--268-- Considering /system/lib/valgrind/memcheck-arm-linux ..
--268-- .. CRC mismatch (computed 9317450f wanted 4a9e0d91)
--268-- object doesn't have a symbol table
--268-- object doesn't have a dynamic symbol table
--268-- Scheduler: using generic scheduler lock implementation.
--268-- Reading suppressions file: /system/lib/valgrind/default.supp
==268==
==268== HEAP SUMMARY:
==268== in use at exit: 0 bytes in 0 blocks
==268== total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==268==
==268== All heap blocks were freed -- no leaks are possible
==268==
==268== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
==268== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Please help.
Regards,
Vignesh------------------------------------------------------------------------------
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