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[Octave-bug-tracker] [bug #54572] int64 does not saturate correctly in n

From: Rik
Subject: [Octave-bug-tracker] [bug #54572] int64 does not saturate correctly in negative direction
Date: Tue, 28 Aug 2018 11:58:44 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0

Follow-up Comment #10, bug #54572 (project octave):

This looks to be compiler-dependent, as well as compiler option dependent.  I
have a development version of Octave compiled with gcc version 5.4.0 20160609
(Ubuntu 5.4.0-6ubuntu1~16.04.10) and the options '-O2'.  This version exhibits
the bad behavior.  I have another tree where I have compiled the same code
with the same compiler, but with the options '-ggdb3 -O0' (for debugging). 
This version works.  This may be a nasty upstream bug where certain
optimizations are not being done correctly.


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