[Valgrind-users] Problem in getting valgrind to run on android

[Vignesh <mv...@ya...>]

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