Valgrind like tool on Mac OS 10.7 (Lion)

Question

I need a tool which helps me to find memory leaks in a c program in a similar way valgrind does. It should figures out when a program overwrites memory it should not (e.g. by miscalculating an array index). I learned that there is the leaks utility along with the graphical instruments app.

However I think it can just find memory allocated with new (or malloc) which was not released and is not accessible anymore. Also I learned that valgrind is supposed to work on older releases (10.5 and 10.6), but I use lion (10.7).

@Mat : Lion (10.7) is not supported yet as OP pointed out, they are working on it since june, but it doesn't seem so easy : bugs.kde.org/show_bug.cgi?id=275168 — Matthieu
– Matthieu, Commented Sep 20, 2011 at 19:45
From your link @Matthieu, it seems as though people have gotten it to work. — Michael Mior
– Michael Mior, Commented Sep 21, 2011 at 0:34

Jonathan Leffler · Accepted Answer · 2011-12-26 16:48:38Z

8

Valgrind 3.7.0 (released 5^th November 2011) supports Lion. http://valgrind.org

edited Dec 26, 2011 at 16:48

Jonathan Leffler

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answered Dec 26, 2011 at 16:46

David Hoerl

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1 Comment

Jonathan Leffler Over a year ago

It is straight-forward to download, build and use it, too.

Seth · Accepted Answer · 2011-09-21 13:38:47Z

4

I would use the XCode developer tool MallocDebug. You should have this installed with XCode in your /Developer folder

Alternatively, you can run your application in gdb and use the native malloc logging by running

% gdb <program name>
(gdb) set env MallocStackLoggingNoCompact 1
(gdb) run

Then, you can use /usr/bin/leaks and /usr/bin/malloc_history to find obvious leaks

edited Sep 21, 2011 at 13:38

answered Sep 21, 2011 at 13:33

Seth

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3 Comments

Nils Over a year ago

Tested it in a case where I accidentally multiplied 2 vars in an array access instead of adding them. w/o MallocStackLoggingNoCompact the bt output is useless, but after having set that it told me the exact line! Thx for the hint!

Nils Over a year ago

However I couldn't find MallocDebug in 10.7. Also shark is gone.. :(

Seth Over a year ago

Looks like MallocDebug has been replaced by the Leaks instrument in the Instruments application.

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