[PATCH] malloc: Deprecate hook variables, __default_morecore, <mcheck.h>

[Joseph Myers]

On Tue, 15 Nov 2016, Florian Weimer wrote:

> > I don't consider valgrind suitable for replacing the uses of mtrace in the
> > glibc testsuite (or other similar uses elsewhere for lightweight checking
> > for leaks).
> 
> I completely agree.
> 
> The above is for the NEWS file, for external use.  For internal use, we still
> need a solution.  (I have an mtrace-compatible interposition-based tracer
> almost finished, but it may not make the cut for the next release, and it may
> be superseded by DJ's work anyway.)  I think we can run internal deprecation
> at a different pace than external deprecation.

Well, I think mtrace (meaning the ability to run with tracing then run the 
mtrace script to process the results, more than the functions to turn 
tracing on and off) is similarly useful externally as a lightweight system 
for tracing allocations and detecting leaks.  And it is of course 
documented in the manual.

-- 
Joseph S. Myers
joseph@codesourcery.com