Dear maintainer,

golang-1.26 fails to build on riscv64 with an error in the testsuite:

| ?   	cmd/compile/internal/staticinit	[no test files]
| ok  	cmd/compile/internal/syntax	0.398s
| --- FAIL: TestMergeLocalsIntegration (0.52s)
|     mergelocals_test.go:181: =-= raw cand list for func ABC:
|          0: integration.go:65:6 "p1" sz=8200 hp=true align=8 t=Pointery
|          1: integration.go:65:10 "p2" sz=8200 hp=true align=8 t=Pointery
|          2: integration.go:71:7 "xp3" sz=8200 hp=true align=8 t=Pointery2
|          3: integration.go:82:7 "xp4" sz=8200 hp=true align=8 t=Pointery2
|          4: integration.go:48:7 "v2" sz=8200 hp=false align=8 t=Vanilla
|          5: integration.go:53:7 "v3" sz=8200 hp=false align=8 t=Vanilla2
|          6: integration.go:60:6 "s" sz=8192 hp=false align=8 t=Single
|         =-= addregion st=0 en=6: add part 0 -> 6
|
|     mergelocals_test.go:182: expected trace output on 8 vars got 0
| CODE:

The full build log is available there:
https://buildd.debian.org/status/fetch.php?pkg=golang-1.26&arch=riscv64&ver=1.26.6-2&stamp=1787146614&raw=0

The issue is perfectly reproductible, and does not happened with
golang-1.27. Therefore I looked for and upstream fix, and I have found
that commit which needs to be backported:
https://github.com/golang/go/commit/5d5c7ff1f012bb70d653c1a2b282ee46161b6914

A proposed backport for the 1.26 branch is available here:
https://go-review.googlesource.com/c/go/+/812900/2

With it the testsuite passes on riscv64.

Regards
Aurelien

We believe that the bug you reported is fixed in the latest version of
golang-1.26, 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 1144887@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Dr. Tobias Quathamer <toddy@debian.org> (supplier of updated golang-1.26 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 ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Thu, 20 Aug 2026 12:00:26 +0200
Source: golang-1.26
Architecture: source
Version: 1.26.7-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Go Compiler Team <team+go-compiler@tracker.debian.org>
Changed-By: Dr. Tobias Quathamer <toddy@debian.org>
Closes: 1144887
Changes:
 golang-1.26 (1.26.7-1) unstable; urgency=medium
 .
   * New upstream version 1.26.7
     - Remove patch for failing TestMergeLocalsIntegration
     - Cherry-pick fix from upstream. Closes: #1144887
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