Re: [Valgrind-users] Are valgrind leak-check results valid iftarget allocates a block larger than 4G?

[WAROQUIERS P. <phi...@eu...>]

>>   1. integrate the patch  https://bugs.kde.org/show_bug.cgi?id=250101
>I have voted +10 for this patch.  [Why did it not appear in 3.6.x?]

It was a candidate for 3.6.0, but I understand there was too much work,
and too little effort available.
For 3.6.1, this patch was not taken, as this is not fixing a real bug,
but just improving the amount of resources needed.
But I am sure it is again a candidate for 3.7.0 :).

>>   2. add a new kind of error in memcheck: "failed (re-)allocation".
>I support such a warning the first time (each) for malloc and realloc.
>For realloc because memcheck tries to increase the chances of 
>such an error;
>for malloc because of general cleanliness.
>I'm wary of giving a warning every time: too much noise for 
>good programs
>which correctly check and recover, but that happen to run out of space.

I understand the worry, but at least in my experience, I have not seen
much programs which effectively go to an out of memory situation and
then check and recover.
And in practice, if the "failed (re-)alloc" is handled like all
the other errors of Valgrind, the re-occurrence of the same error
will be "collapsed" with the previous occurences (giving things
such as "10 errors from one context").

So, I believe the best is to not do a specialized kind of warning
for that, but just a normal memcheck error which will be handled
as usual, can be suppressed as usual with the stack trace, etc.

Philippe

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