[Debian-med-packaging] Bug#970497: igraph: FTBFS on mips64el

[Jerome BENOIT]

On Thu, 28 Jan 2021 07:33:56 +0100 Jerome BENOIT <calculus at rezozer.net> wrote:
> Hello,
> 
> I am currently isolating the faulty code on the porter Eller.
> 
> The issue seems to appear after the call to arpack functions,
> so it does not look as an arparck issue.

Finally I isolated the place where the issue emerge. It is indeed an arpack issue.
In src/arpack.c in function igraph_arpack_rssolve the dsaupd_ loop works fine
in the sense that the loop keeps giving the same output when the random seed is fixed.
The issue emerges at the postamble of the loop, dseupd_ gives random output in the same conditions.

I am on my way to write a small piece of arpack code to confirm this. If confirmed,
I will submit the bug to the arpack debian maintainer.

Best wishes,
Jerome



> 
> Best wishes,
> Jerome
> 
> -- 
> Jerome BENOIT | calculus+at-rezozer^dot*net
> https://qa.debian.org/developer.php?login=calculus@rezozer.net
> AE28 AE15 710D FF1D 87E5  A762 3F92 19A6 7F36 C68B
> 
> 

-- 
Jerome BENOIT | calculus+at-rezozer^dot*net
https://qa.debian.org/developer.php?login=calculus@rezozer.net
AE28 AE15 710D FF1D 87E5  A762 3F92 19A6 7F36 C68B