#1128740 powerman: FTBFS with glibc 2.43 due to ISO C23 const return types

Package:
src:powerman
Source:
src:powerman
Submitter:
Aurelien Jarno
Date:
2026-06-01 20:33:02 UTC
Severity:
normal
Tags:
#1128740#5
Date:
2026-02-22 16:16:47 UTC
From:
To:
Dear maintainer(s),

powerman fails to build from source with glibc 2.43, currently in
experimental. From the build log:

| make[3]: Entering directory '/build/reproducible-path/powerman-2.4.4/src/liblsd'
| /bin/bash ../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../config   -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Werror -Wno-parentheses -Wno-error=parentheses -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/powerman-2.4.4=. -flto=auto -ffat-lto-objects -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -c -o hostlist.lo hostlist.c
| libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../config -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Werror -Wno-parentheses -Wno-error=parentheses -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/powerman-2.4.4=. -flto=auto -ffat-lto-objects -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -mbranch-protection=standard -c hostlist.c  -fPIC -DPIC -o .libs/hostlist.o
| hostlist.c: In function '_parse_single_range':
| hostlist.c:1403:12: error: assignment discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
|  1403 |     if ((p = strchr(str, '-'))) {
|       |            ^
| cc1: all warnings being treated as errors
| make[3]: *** [Makefile:452: hostlist.lo] Error 1
| make[3]: Leaving directory '/build/reproducible-path/powerman-2.4.4/src/liblsd'
| make[2]: *** [Makefile:411: all-recursive] Error 1
| make[2]: Leaving directory '/build/reproducible-path/powerman-2.4.4/src'
| make[1]: *** [Makefile:475: all-recursive] Error 1
| make[1]: Leaving directory '/build/reproducible-path/powerman-2.4.4'
| dh_auto_build: error: make -j1 returned exit code 2
| make: *** [debian/rules:18: binary] Error 25
| dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2

The full build log is available here [1].

The issue is due to ISO C23 declaration of bsearch, memchr, strchr,
strpbrk, strrchr, strstr, wcschr, wcspbrk, wcsrchr, wcsstr and wmemchr,
which now returns a pointer to a const-qualified type when the input
argument is a pointer to a const-qualified type [2].

I would like to thanks Emanuele Rocca for doing the archive rebuild on
a fast arm64 server.

Regards
Aurelien

[1] https://people.debian.org/~ema/glibc-2.43-rebuilds/output-1/powerman_arm64.build
[2] https://sourceware.org/git/?p=glibc.git;a=blob;f=NEWS;h=e271fb2e4d76903c77a302aaec1ca22ce31027d0;hb=f762ccf84f122d1354f103a151cba8bde797d521#l19

#1128740#10
Date:
2026-06-01 20:30:41 UTC
From:
To:
control: tag -1 + patch
- https://github.com/chaos/powerman/commit/3495907fa11712b81db0008c9befc513e2d33d27
- https://github.com/chaos/powerman/pull/217

Regards
Aurelien