Re: [Valgrind-users] Assertion 'eltSzB <= ddpa->poolSzB' failed

[Philippe W. <phi...@sk...>]

On Thu, 2016-02-04 at 08:54 +0100, Florian Krohm wrote:
> On 03.02.2016 21:50, Philippe Waroquiers wrote:
> > 
> > The assert might be caused by the debuginfo containing a string bigger
> > than SEGINFO_STRPOOLSIZE (64Kb).
> 
> Why exactly are we having yet another fixed size buffer here?
> I've spent a lot of time crawling through the code and getting rid of
> those. To read this is a bit of a disappointment.
Yes, the work on removing or auditing the maxima was a nice thing.
For this particular fixed size:
This is not a (very) new fixed size buffer.
It was already there at least in 3.9.0 (did not check before).
In fact, I suspect that in 3.9.0, exceeding the maxima was
causing a buffer overflow (i.e. was not checked).

I think it should not be that difficult to allow to exceed the
pool size (but still keeping the pool size reasonable, and allocate
a bigger one only when needed).

Still, finding a 64kb string in the debug info is strange.


Philippe