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[Octave-bug-tracker] [bug #54762] Using fill with 1000 vertices crashes

From: Philip Nienhuis
Subject: [Octave-bug-tracker] [bug #54762] Using fill with 1000 vertices crashes octave
Date: Mon, 1 Oct 2018 17:30:01 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0 SeaMonkey/2.48

Follow-up Comment #7, bug #54762 (project octave):

FWIW, on my Win7 64bit box, the dev version (64bit indexing) still works
reliably with 750 vertices (instead of the 1000 in the example) (Qt toolkit).
With the fltk toolkit the limit lies around 955 vertices.

Renaming opengl32.dll to _opengl32.dll brings the limits down .... With fltk
Octave crashes already with 750 vertices (FYI the box has NVidia graphics, it
has Nvidia supplied opengl drivers).

With Qt graphics, trying with slowly increasing the number of vertices (after
closing the figure each time), each time adding 2 vertices, still works fine
until ~784 vertices but restarting Octave and then immediately trying e.g.,
775 vertices makes Octave crash.
That tastes like there's some memory limit that gets increased slowly when
slowly increasing the nr. of vertices, maybe by garbage collection? Intriguing
stuff anyway.


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