Bug#1097310: loadwatch: ftbfs with GCC-15
Package: src:loadwatch
Version: 1.0+1.1alpha1-8
Severity: important
Tags: sid forky
User: debian-gcc@lists.debian.org
Usertags: ftbfs-gcc-15
[This bug is NOT targeted to the upcoming trixie release]
Please keep this issue open in the bug tracker for the package it
was filed for. If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.
The package fails to build in a test rebuild on at least amd64 with
gcc-15/g++-15, but succeeds to build with gcc-14/g++-14. The
severity of this report will be raised before the forky release.
The full build log can be found at:
http://qa-logs.debian.net/2025/02/16/amd64exp/loadwatch_1.0+1.1alpha1-8_unstable_gccexp.log.gz
The last lines of the build log are at the end of this report.
To build with GCC 15, either set CC=gcc-15 CXX=g++-15 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.
apt-get -t=experimental install g++
GCC 15 now defaults to the C23/C++23 standards, exposing many FTBFS.
Other Common build failures are new warnings resulting in build failures
with -Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-15/porting_to.html
[...]
dh binary
dh_update_autotools_config
dh_autoreconf
autoreconf: warning: autoconf input should be named 'configure.ac', not 'configure.in'
aclocal: warning: autoconf input should be named 'configure.ac', not 'configure.in'
configure.in:3: warning: The macro 'AC_CONFIG_HEADER' is obsolete.
configure.in:3: You should run autoupdate.
./lib/autoconf/status.m4:719: AC_CONFIG_HEADER is expanded from...
configure.in:3: the top level
configure.in:14: warning: The macro 'AC_HEADER_STDC' is obsolete.
configure.in:14: You should run autoupdate.
./lib/autoconf/headers.m4:663: AC_HEADER_STDC is expanded from...
configure.in:14: the top level
configure.in:21: warning: AC_OUTPUT should be used without arguments.
configure.in:21: You should run autoupdate.
autoheader: warning: autoconf input should be named 'configure.ac', not 'configure.in'
dh_auto_configure
./configure --build=x86_64-linux-gnu --prefix=/usr --includedir=\${prefix}/include --mandir=\${prefix}/share/man --infodir=\${prefix}/share/info --sysconfdir=/etc --localstatedir=/var --disable-option-checking --disable-silent-rules --libdir=\${prefix}/lib/x86_64-linux-gnu --runstatedir=/run --disable-maintainer-mode --disable-dependency-tracking
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether gcc accepts -g... yes
checking for gcc option to enable C11 features... none needed
checking for a BSD-compatible install... /usr/bin/install -c
checking for elf_begin in -lelf... no
checking for kstat_open in -lkstat... no
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for sys/wait.h that is POSIX.1 compatible... yes
checking for unistd.h... (cached) yes
checking for kstat.h... no
checking for pid_t... yes
configure: creating ./config.status
config.status: creating Makefile
config.status: creating config.h
dh_auto_build
make -j8
make[1]: Entering directory '/build/reproducible-path/loadwatch-1.0+1.1alpha1'
gcc -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/loadwatch-1.0+1.1alpha1=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -c -o loadwatch.o loadwatch.c
gcc -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/loadwatch-1.0+1.1alpha1=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -c -o lw-ctl.o lw-ctl.c
loadwatch.c: In function ‘main’:
loadwatch.c:297:24: error: assignment to ‘__sighandler_t’ {aka ‘void (*)(int)’} from incompatible pointer type ‘void (*)(void)’ [-Wincompatible-pointer-types]
297 | handler.sa_handler = &cleanup;
| ^
loadwatch.c:48:1: note: ‘cleanup’ declared here
48 | cleanup()
| ^~~~~~~
In file included from loadwatch.c:7:
/usr/include/signal.h:72:16: note: ‘__sighandler_t’ declared here
72 | typedef void (*__sighandler_t) (int);
| ^~~~~~~~~~~~~~
make[1]: *** [<builtin>: loadwatch.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/build/reproducible-path/loadwatch-1.0+1.1alpha1'
dh_auto_build: error: make -j8 returned exit code 2
make: *** [debian/rules:7: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
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