GNU Octave - Bugs: bug #57166, ones(), zeros(), pi(), e() do not...

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bug #57166: ones(), zeros(), pi(), e() do not throw error when asked to create an array larger than is possible

Submitter:	Rik <rik5>
Submitted:	Mon 04 Nov 2019 04:31:07 PM UTC


Category:	Interpreter	Severity:	3 - Normal
Priority:	5 - Normal	Item Group:	Missed Error or Warning
Status:	Confirmed	Assigned to:	None
Originator Name:		Open/Closed: *	Open
Release: *	dev	Operating System: *	Any
Fixed Release:	None	Planned Release:	None

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Mon 04 Nov 2019 04:31:07 PM UTC, original submission:

This is easiest to see if Octave has been configured with --disable-64 so that the octave_idx_type is an int32. In that case, the largest number of elements for any dimension is intmax ("int32"). Below is an example

octave:4> format long
octave:5> N = double (intmax ("int32"))
N = 2147483647
octave:6> N = N + 100
N = 2147483747
octave:7> x = ones (N, 1, "uint8");
octave:8> numel (x)
ans = 2147483647
octave:9> diary off

The interpreter truncated the number of elements to the maximum possible, but there was no warning about that. Bug #47468 is related, but different.

Rik <rik5>

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GNU Octave - Bugs: bug #57166, ones(), zeros(), pi(), e() do not...

bug #57166: ones(), zeros(), pi(), e() do not throw error when asked to create an array larger than is possible

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