[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: please set both MALLOC_PERTURB_ and MALLOC_CHECK_ envvars

From: Chong Yidong
Subject: Re: please set both MALLOC_PERTURB_ and MALLOC_CHECK_ envvars
Date: Sat, 28 May 2011 16:19:45 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux)

Jim Meyering <address@hidden> writes:

>> If you develop emacs, or even if you just build from sources regularly,
>> on a glibc-based system, do us all a favor and build with these envvar
>> settings:
>>     export MALLOC_PERTURB_=$((RANDOM % 255 + 1))
>>     export MALLOC_CHECK_=3
>> Why?  Because that helps you expose malloc-related problems far earlier.
>> I've found numerous bugs that way.
> Most of that argument is valid, but I have to confess this time
> a compiler problem appears to be at fault.
> [...]
>     gcc version 4.7.0 20110528 (experimental) (GCC)
> everything works fine, and yes!, even with these envvar settings:
> So at least for a little while, I'll be using that.

Maybe we should add these environment variables to the Hydra build.  But
what to use for MALLOC_PERTURB---117, or the value in your previous

reply via email to

[Prev in Thread] Current Thread [Next in Thread]