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

From: John W. Eaton
Subject: [Octave-bug-tracker] [bug #54572] int64 does not saturate correctly in negative direction
Date: Tue, 28 Aug 2018 15:49:07 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0

Follow-up Comment #13, bug #54572 (project octave):

I'm attaching a stripped-down version of the code from oct-inttypes.h and
oct-inttypes.cc.  I see the problem with GCC 8.2 using -O2 (-O1 is not enough
for me to trigger the bug) when OCTAVE_FAST_INT_OPS is defined.  I could be
wrong, but I suspect a bug in Octave, not the compiler.

(file #44890)

Additional Item Attachment:

File name: int-overflow.cc                Size:6 KB


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