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

From: Dan Sebald
Subject: [Octave-bug-tracker] [bug #54572] int64 does not saturate correctly in negative direction
Date: Tue, 28 Aug 2018 16:52:50 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0

Follow-up Comment #19, bug #54572 (project octave):

The example of Comment #16 isn't failing for me:

@linux ~/octave/bug/54572 $ gcc -O2 -std=c++11 int-overflow-2.cc -lstdc++
address@hidden ~/octave/bug/54572 $ ./a.out 
-9223372036854775808 + -2
u: 9223372036854775806
ux: -2
uy: -9223372036854775808
(ux & uy) < 0:
(~u): -9223372036854775807
__signbit (~u): 1
u: -9223372036854775808

What compiler command are you using?  What output are you seeing when it


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