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[Octave-bug-tracker] [bug #53644] Possible Octave or Nouveau image plot

From: Dan Sebald
Subject: [Octave-bug-tracker] [bug #53644] Possible Octave or Nouveau image plot bug (not sure which) discovered via ASAN
Date: Thu, 19 Apr 2018 12:13:21 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0

Follow-up Comment #9, bug #53644 (project octave):

I've done the full build and "make check" on a system with Nvidia video driver
active and a system with Nouveau driver active.  As far as graphics, both
succeed (yay!).

It wouldn't surprise me if this issue may have caused problems on other
systems and graphics cards, but in those situations the difference could have
been that *maybe* Nouveau is using system memory for its implementation, hence
ASAN catches an address-out-of-bounds error, whereas the Intel/Nvidia native
graphics drivers use their internal memory for general calculations (since the
companies know exactly what memory their own cards have).  Just a guess.  But
in the latter situation there's no OS to catch problems internal to the
graphics card so however it is programmed (right or wrong) is what happens.


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