[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/lwipv6_1.5a-10_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

[...]
  323 |                         ip = ip_addr_list_maskfind(netif->autoconf->addrs_tentative, (struct ip_addr *) &ina->targetip);
      |                                                                                                         ^~~~~~~~~~~~~~
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/core/ipv6/ip6_autoconf.c -o ip6_autoconf.o >/dev/null 2>&1
/bin/bash ../../../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../../..  -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2  -g3 -ggdb3 -c -o ip6_radv.lo `test -f '../../../../../lwip-v6/src/core/ipv6/ip6_radv.c' || echo './'`../../../../../lwip-v6/src/core/ipv6/ip6_radv.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/core/ipv6/ip6_radv.c  -fPIC -DPIC -o .libs/ip6_radv.o
../../../../../lwip-v6/src/core/ipv6/ip6_radv.c: In function 'send_ra':
../../../../../lwip-v6/src/core/ipv6/ip6_radv.c:320:48: warning: taking address of packed member of 'struct icmp_opt_prefix' may result in an unaligned pointer value [-Waddress-of-packed-member]
  320 |                 ip_addr_set((struct ip_addr *) &opt_prefix->prefix, &list->Prefix);
      |                                                ^~~~~~~~~~~~~~~~~~~
../../../../../lwip-v6/src/core/ipv6/ip6_radv.c: In function 'ip_radv_handle_rs':
../../../../../lwip-v6/src/core/ipv6/ip6_radv.c:664:51: warning: taking address of packed member of 'struct ip_hdr' may result in an unaligned pointer value [-Waddress-of-packed-member]
  664 |                 send_unicast_ra_with_delay(netif, &iphdr->src);
      |                                                   ^~~~~~~~~~~
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/core/ipv6/ip6_radv.c -o ip6_radv.o >/dev/null 2>&1
/bin/bash ../../../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../../..  -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2  -g3 -ggdb3 -c -o api_lib.lo `test -f '../../../../../lwip-v6/src/api/api_lib.c' || echo './'`../../../../../lwip-v6/src/api/api_lib.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/api_lib.c  -fPIC -DPIC -o .libs/api_lib.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/api_lib.c -o api_lib.o >/dev/null 2>&1
/bin/bash ../../../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../../..  -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2  -g3 -ggdb3 -c -o api_msg.lo `test -f '../../../../../lwip-v6/src/api/api_msg.c' || echo './'`../../../../../lwip-v6/src/api/api_msg.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/api_msg.c  -fPIC -DPIC -o .libs/api_msg.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/api_msg.c -o api_msg.o >/dev/null 2>&1
/bin/bash ../../../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../../..  -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2  -g3 -ggdb3 -c -o tcpip.lo `test -f '../../../../../lwip-v6/src/api/tcpip.c' || echo './'`../../../../../lwip-v6/src/api/tcpip.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/tcpip.c  -fPIC -DPIC -o .libs/tcpip.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/tcpip.c -o tcpip.o >/dev/null 2>&1
/bin/bash ../../../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../../..  -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2  -g3 -ggdb3 -c -o err.lo `test -f '../../../../../lwip-v6/src/api/err.c' || echo './'`../../../../../lwip-v6/src/api/err.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/err.c  -fPIC -DPIC -o .libs/err.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/err.c -o err.o >/dev/null 2>&1
/bin/bash ../../../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../../..  -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2  -g3 -ggdb3 -c -o netlink.lo `test -f '../../../../../lwip-v6/src/api/netlink.c' || echo './'`../../../../../lwip-v6/src/api/netlink.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/netlink.c  -fPIC -DPIC -o .libs/netlink.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/netlink.c -o netlink.o >/dev/null 2>&1
/bin/bash ../../../../../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../../../../..  -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2  -g3 -ggdb3 -c -o sockets.lo `test -f '../../../../../lwip-v6/src/api/sockets.c' || echo './'`../../../../../lwip-v6/src/api/sockets.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../.. -I../../../../ports/unix/include -I../../../../../lwip-v6/src/include -I../../../../../lwip-v6/src/include/ipv6 -Iapps -I. -I../../../../../lwip-v6/src/include/userfilter -I../../../../../lwip-v6/src/include/radv -Wdate-time -D_FORTIFY_SOURCE=2 -g3 -ggdb3 -c ../../../../../lwip-v6/src/api/sockets.c  -fPIC -DPIC -o .libs/sockets.o
../../../../../lwip-v6/src/api/sockets.c: In function 'um_sel_rec_signal':
../../../../../lwip-v6/src/api/sockets.c:1256:25: error: too many arguments to function 'p->cb'; expected 0, have 1
 1256 |                         p->cb(p->arg);
      |                         ^     ~~~~~~
../../../../../lwip-v6/src/api/sockets.c:1204:17: note: declared here
 1204 |         void (* cb)();
      |                 ^~
../../../../../lwip-v6/src/api/sockets.c: In function 'lwip_pselect':
../../../../../lwip-v6/src/api/sockets.c:2270:65: error: passing argument 1 of 'lwip_event_subscribe' from incompatible pointer type [-Wincompatible-pointer-types]
 2270 |                                 revents |= lwip_event_subscribe(lwip_pipecb,fdp,i,events);
      |                                                                 ^~~~~~~~~~~
      |                                                                 |
      |                                                                 void (*)(int *)
../../../../../lwip-v6/src/api/sockets.c:1272:34: note: expected 'void (*)(void)' but argument is of type 'void (*)(int *)'
 1272 | int lwip_event_subscribe(void (* cb)(), void *arg, int fd, int events)
      |                          ~~~~~~~~^~~~~
../../../../../lwip-v6/src/api/sockets.c:2240:6: note: 'lwip_pipecb' declared here
 2240 | void lwip_pipecb(int *fdp)
      |      ^~~~~~~~~~~
../../../../../lwip-v6/src/api/sockets.c: In function 'lwip_ppoll':
../../../../../lwip-v6/src/api/sockets.c:2420:69: error: passing argument 1 of 'lwip_event_subscribe' from incompatible pointer type [-Wincompatible-pointer-types]
 2420 |                                 fds[i].revents=lwip_event_subscribe(lwip_pipecb,fdp,fds[i].fd,events[i]);
      |                                                                     ^~~~~~~~~~~
      |                                                                     |
      |                                                                     void (*)(int *)
../../../../../lwip-v6/src/api/sockets.c:1272:34: note: expected 'void (*)(void)' but argument is of type 'void (*)(int *)'
 1272 | int lwip_event_subscribe(void (* cb)(), void *arg, int fd, int events)
      |                          ~~~~~~~~^~~~~
../../../../../lwip-v6/src/api/sockets.c:2240:6: note: 'lwip_pipecb' declared here
 2240 | void lwip_pipecb(int *fdp)
      |      ^~~~~~~~~~~
make[3]: *** [Makefile:789: sockets.lo] Error 1
make[3]: Leaving directory '/build/reproducible-path/lwipv6-1.5a/lwip-contrib/ports/unix/proj/lib'
make[2]: *** [Makefile:291: all-recursive] Error 1
make[2]: Leaving directory '/build/reproducible-path/lwipv6-1.5a'
make[1]: *** [Makefile:220: all] Error 2
make[1]: Leaving directory '/build/reproducible-path/lwipv6-1.5a'
make: *** [/usr/share/cdbs/1/class/makefile.mk:77: debian/stamp-makefile-build] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2

We believe that the bug you reported is fixed in the latest version of
lwipv6, 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 1097322@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Alexandre Detiste <tchet@debian.org> (supplier of updated lwipv6 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: Sat, 06 Sep 2025 17:38:02 +0200
Source: lwipv6
Architecture: source
Version: 1.5a-10.1
Distribution: unstable
Urgency: medium
Maintainer: Debian VSquare Team <virtualsquare@cs.unibo.it>
Changed-By: Alexandre Detiste <tchet@debian.org>
Closes: 1097322
Changes:
 lwipv6 (1.5a-10.1) unstable; urgency=medium
 .
   * Non-maintainer upload.
   * Fix FTBFS with GCC-15 (Closes: #1097322)
   * Drop CDBS from build
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