Your message dated Wed, 10 Dec 2025 07:51:56 +0000
with message-id <[email protected]>
and subject line Bug#1122073: fixed in satpy 0.59.0-2
has caused the Debian Bug report #1122073,
regarding satpy doesn't handle NaN appropriately on riscv64
to be marked as done.
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1122073: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1122073
Debian Bug Tracking System
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--- Begin Message ---
Package: python3-satpy
Version: 0.59.0-1
Tags: patch
Hi,
As part of a request to help satpy to testing, it was discovered by
Aurelien that satpy doesn't handle NaN properly and he provides a patch,
see below.
Paul
-------- Forwarded Message --------
Subject: Re: Bug#1121879: release.debian.org: Help satpy migrate to testing
Date: Fri, 5 Dec 2025 19:57:31 +0100
From: Aurelien Jarno <[email protected]>
To: Paul Gevers <[email protected]>
CC: Bas Couwenberg <[email protected]>, [email protected],
[email protected]
Hi,
On 2025-12-04 08:49, Paul Gevers wrote:
user [email protected]
usertag riscv64
thanks
Hi,
On 12/4/25 05:33, Bas Couwenberg wrote:
> Please help satpy migrate to testing, the autopkgtest failures on riscv64 &
s390x are not regressions, but are not detected as such.
The package got removed from testing, so the package is considered new. For
new packages, any failure is preventing migration. I'll ignore the s390x
failure as that's a test dependency that can't be installed there
(python3-satpy is arch:all and can be installed, but not all its
Recommends). The riscv64 failure should be investigated as that seems to
point out a genuine issue (which of course can be a bad test, but then
fixing the test is the proper course of action). Adding riscv64 porters for
that.
This is indeed a real issue. The conversion of a NaN to an int is
undefined. It appears to be 0 on most CPUs, but it is not the case on
riscv64.
The issue is actually already known upstream:
https://github.com/pytroll/satpy/issues/2934
The following patch fixes the issue on riscv64. It also removes the
warning on other architectures.
--- satpy-0.59.0.orig/satpy/enhancements/colormap.py
+++ satpy-0.59.0/satpy/enhancements/colormap.py
@@ -41,9 +41,10 @@ def lookup(img, **kwargs):
@on_separate_bands
@using_map_blocks
def _lookup_table(band_data, luts=None, index=-1):
- # NaN/null values will become 0
lut = luts[:, index] if len(luts.shape) == 2 else luts
- band_data = band_data.clip(0, lut.size - 1).astype(np.uint8)
+ band_data = band_data.clip(0, lut.size - 1)
+ # Convert to uint8, with NaN/null values changed into 0
+ band_data = np.nan_to_num(band_data).astype(np.uint8)
return lut[band_data]
Regards
Aurelien
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
[email protected] http://aurel32.net
OpenPGP_signature.asc
Description: OpenPGP digital signature
--- End Message ---
--- Begin Message ---
Source: satpy
Source-Version: 0.59.0-2
Done: Antonio Valentino <[email protected]>
We believe that the bug you reported is fixed in the latest version of
satpy, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Antonio Valentino <[email protected]> (supplier of updated satpy
package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Wed, 03 Dec 2025 20:49:13 +0000
Source: satpy
Architecture: source
Version: 0.59.0-2
Distribution: unstable
Urgency: medium
Maintainer: Debian GIS Project <[email protected]>
Changed-By: Antonio Valentino <[email protected]>
Closes: 1122073
Changes:
satpy (0.59.0-2) unstable; urgency=medium
.
* debian/patches:
- New 0010-Fix-test-failure-on-riscv64.patch (Closes: #1122073).
* debian/tests:
- Do not run autopkgtests on s390x. Some of the dependencies
are not available on this platform.
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