[Python-Dev] Deallocation of a pointer not malloced, any tips? (original) (raw)

skip at pobox.com skip at pobox.com
Fri Apr 20 19:30:32 CEST 2007 

Kumar> Always the same warning; sometimes it even segfaults python, but
Kumar> rarely. I only see it on Mac OS X (two separate machines), python
Kumar> 2.4.3 both built from source via Darwin Ports. The same suite gives no
Kumar> such warning on a 2.4.3 production machine running Free BSD.

In addition to Josiah's response I will note that the warning you get is specific to the Mac's malloc implementation (or maybe more generally to Darwin or *BSD). It's not necessarily that the problem doesn't occur on other platforms, just that the malloc implementation doesn't include that sort of check by default.

Kumar> I turned on MallocHelp but just stared blankly at heaps and stack
Kumar> options.

I've used that stuff but it's been awhile. Try "man malloc" in a terminal window. If that doesn't get you going post your questions pythonmac-sig at python.org mailing list. That's were most of the Mac-head Python developers hang out.

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