valgrind

How to use valgrind with python?

由 回眸只為那壹抹淺笑 提交于 2019-11-26 06:29:30
问题 I am trying to memcheck a C python extension I am writing, but I\'m having trouble setting up valgrind to work with python. I would really appreciate some advice. Just for context, this is Ubuntu 13.10, python 2.7.5+, and valgrind 3.8.1. As per recommendation from Readme.valgrind I did the following. 1) Downloaded the python source with sudo apt-get build-dep python2.7 apt-get source python2.7 2) Applied the code patch, i.e. \"Uncomment Py_USING_MEMORY_DEBUGGER in Objects/obmalloc.c\". 3)

How do I use valgrind to find memory leaks?

由 天大地大妈咪最大 提交于 2019-11-26 05:59:21
问题 How do I use valgrind to find the memory leaks in a program? Please someone help me and describe the steps to carryout the procedure? I am using Ubuntu 10.04 and I have a program a.c , please help me out. 回答1: How to Run Valgrind I would like to build a more verbose explanation for how to use Valgrind effectively and how to resolve memory leaks. Not to insult the OP, but for those who come to this question and are still new to Linux— you might have to install Valgrind on your system. sudo apt

Valgrind reports errors for a very simple C program

由 最后都变了- 提交于 2019-11-26 05:38:43
问题 I\'m learning C language from Learn C The Hard Way. I\'m on exercise 6 and while I can make it work, valgrind repots a lot of errors. Here\'s the stripped down minimal program from a file ex6.c : #include <stdio.h> int main(int argc, char *argv[]) { char initial = \'A\'; float power = 2.345f; printf(\"Character is %c.\\n\", initial); printf(\"You have %f levels of power.\\n\", power); return 0; } Content of Makefile is just CFLAGS=-Wall -g . I compile the program with $ make ex6 (there are no

cpp - valgrind - Invalid read of size 8

由 那年仲夏 提交于 2019-11-26 04:55:52
问题 I\'m getting mad understanding that valgrind error. I\'ve got a template class called Matrix that has some overloaded operators etc... to do some mathematical operations. Matrixes are used inside a class called ExtendedKalmanFilter. Here is the valgrind trace: ==3352== Invalid read of size 8 ==3352== at 0x804CC8F: BOViL::math::Matrix<double>::operator*(BOViL::math::Matrix<double> const&) const (Matrix.h:285) ==3352== by 0x8051F91: BOViL::algorithms::ExtendedKalmanFilter::forecastStep(double)

Can&#39;t run a Java Android program with Valgrind

由 怎甘沉沦 提交于 2019-11-26 04:47:12
问题 I\'m trying to start a Java program under Valgring like this (in adb shell): valgrind am start -a android.intent.action.MAIN -n com.me.myapp/.MainActivity I\'m getting: ==2362== Memcheck, a memory error detector ==2362== Copyright (C) 2002-2012, and GNU GPL\'d, by Julian Seward et al. ==2362== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info ==2362== Command: am ==2362== /system/bin/sh: am: No such file or directory 回答1: You have to create a script, lets call it start

Yosemite and Valgrind

由 送分小仙女□ 提交于 2019-11-26 03:08:35
问题 Can you tell me how to install valgrind on yosemite? When I try to install it i get \" checking for the kernel version... unsupported (14.0.0) configure: error: Valgrind works on Darwin 10.x, 11.x, 12.x and 13.x (Mac OS X 10.6/7/8/9) \" There is no official path or update, and I didn\'t found anything (except http://comments.gmane.org/gmane.comp.kde.devel.bugs/1553705 , but they didn\'t resolve that problem). 回答1: As there's no stable release that supports Yosemite, you can install the latest

Valgrind: Memory still reachable with trivial program using <iostream>

由 牧云@^-^@ 提交于 2019-11-26 01:53:42
问题 Take the following trivial program: #include <iostream> int main() { return 0; } If I run this using valgrind, I\'m told that there are 72,704 bytes in 1 blocks that are still reachable . There have been extensive discussions on SO about whether or not to worry about still reachable warnings--I\'m not concerned about that. I\'d just like to understand how simply including a standard library header could cause a still reachable warning, when none of the objects from that library were allocated

Valgrind: Memory still reachable with trivial program using <iostream>

由 会有一股神秘感。 提交于 2019-11-26 01:46:31
Take the following trivial program: #include <iostream> int main() { return 0; } If I run this using valgrind, I'm told that there are 72,704 bytes in 1 blocks that are still reachable . There have been extensive discussions on SO about whether or not to worry about still reachable warnings--I'm not concerned about that. I'd just like to understand how simply including a standard library header could cause a still reachable warning, when none of the objects from that library were allocated in the program itself. Here is the full valgrind output: $ valgrind --leak-check=full --track-origins=yes

Still Reachable Leak detected by Valgrind

由 白昼怎懂夜的黑 提交于 2019-11-25 23:36:42
问题 All the functions mentioned in this block are library functions. How can I rectify this memory leak? It is listed under the \" Still reachable \" category. (There are 4 more, which are very similar, but of varying sizes) 630 bytes in 1 blocks are still reachable in loss record 5 of 5 at 0x4004F1B: calloc (vg_replace_malloc.c:418) by 0x931CD2: _dl_new_object (dl-object.c:52) by 0x92DD36: _dl_map_object_from_fd (dl-load.c:972) by 0x92EFB6: _dl_map_object (dl-load.c:2251) by 0x939F1B: dl_open
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