Debian Bug report logs - #1098028
udevil: ftbfs with GCC-15

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Message #5 received at [email protected] (full text, mbox, reply):

From: Matthias Klose <[email protected]>

To: [email protected]

Subject: udevil: ftbfs with GCC-15

Date: Mon, 17 Feb 2025 17:58:10 +0000

Package: src:udevil
Version: 0.4.4-4
Severity: important
Tags: sid forky
User: [email protected]
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/udevil_0.4.4-4_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

[...]
 2358 |     chown( AUTO_MEDIA_DIR, 0, 0 );
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c:2360:5: warning: ignoring return value of ‘chown’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2360 |     chown( auto_media, 0, 0 );
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c:2387:9: warning: ignoring return value of ‘chown’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2387 |         chown( auto_media, orig_ruid, 0 );
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c: In function ‘umount_path’:
udevil.c:2148:5: warning: ignoring return value of ‘setreuid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2148 |     setreuid( 0, -1 );  // mount needs real uid
      |     ^~~~~~~~~~~~~~~~~
udevil.c:2149:5: warning: ignoring return value of ‘setregid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2149 |     setregid( 0, -1 );
      |     ^~~~~~~~~~~~~~~~~
udevil.c:2170:5: warning: ignoring return value of ‘setreuid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2170 |     setreuid( orig_ruid, -1 );
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c:2171:5: warning: ignoring return value of ‘setregid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2171 |     setregid( orig_rgid, -1 );
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c: In function ‘mount_knows’:
udevil.c:2298:5: warning: ignoring return value of ‘setreuid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2298 |     setreuid( 0, -1 );  // mount needs real uid
      |     ^~~~~~~~~~~~~~~~~
udevil.c:2299:5: warning: ignoring return value of ‘setregid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2299 |     setregid( 0, -1 );
      |     ^~~~~~~~~~~~~~~~~
udevil.c:2312:5: warning: ignoring return value of ‘setreuid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2312 |     setreuid( orig_ruid, -1 );
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c:2313:5: warning: ignoring return value of ‘setregid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2313 |     setregid( orig_rgid, -1 );
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c: In function ‘mount_device’:
udevil.c:2219:9: warning: ignoring return value of ‘setreuid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2219 |         setreuid( 0, -1 );  // mount needs real uid
      |         ^~~~~~~~~~~~~~~~~
udevil.c:2220:9: warning: ignoring return value of ‘setregid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2220 |         setregid( 0, -1 );
      |         ^~~~~~~~~~~~~~~~~
udevil.c:2245:9: warning: ignoring return value of ‘setreuid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2245 |         setreuid( orig_ruid, -1 );
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c:2246:9: warning: ignoring return value of ‘setregid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2246 |         setregid( orig_rgid, -1 );
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c: In function ‘exec_program’:
udevil.c:2016:9: warning: ignoring return value of ‘setreuid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2016 |         setreuid( 0, -1 );  // mount needs real uid
      |         ^~~~~~~~~~~~~~~~~
udevil.c:2017:9: warning: ignoring return value of ‘setregid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2017 |         setregid( 0, -1 );
      |         ^~~~~~~~~~~~~~~~~
udevil.c:2035:9: warning: ignoring return value of ‘setreuid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2035 |         setreuid( orig_ruid, -1 );
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
udevil.c:2036:9: warning: ignoring return value of ‘setregid’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 2036 |         setregid( orig_rgid, -1 );
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
make[3]: *** [Makefile:505: udevil-udevil.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory '/build/reproducible-path/udevil-0.4.4/src'
make[2]: *** [Makefile:448: all-recursive] Error 1
make[2]: Leaving directory '/build/reproducible-path/udevil-0.4.4'
make[1]: *** [Makefile:380: all] Error 2
make[1]: Leaving directory '/build/reproducible-path/udevil-0.4.4'
dh_auto_build: error: make -j8 returned exit code 2
make: *** [debian/rules:10: build] Error 25
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2

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