Bug#1097923: splitvt: ftbfs with GCC-15
Package: src:splitvt
Version: 1.6.6-17
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/splitvt_1.6.6-17_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
[...]
736 | static void move_bar(howfar)
| ^~~~~~~~
splitvt.c:748:9: error: too many arguments to function ‘init_vt100’; expected 0, have 1
748 | init_vt100(0); /* Reset the windows to the new size */
| ^~~~~~~~~~ ~
vt100.h:4:14: note: declared here
4 | extern char *init_vt100(); /* Initialize the window */
| ^~~~~~~~~~
splitvt.c: In function ‘winch’:
splitvt.c:763:13: warning: old-style function definition [-Wold-style-definition]
763 | static void winch(sig)
| ^~~~~
splitvt.c:768:21: error: passing argument 2 of ‘signal’ from incompatible pointer type [-Wincompatible-pointer-types]
768 | signal(sig, winch);
| ^~~~~
| |
| void (*)(void)
/usr/include/signal.h:88:57: note: expected ‘__sighandler_t’ {aka ‘void (*)(int)’} but argument is of type ‘void (*)(void)’
88 | extern __sighandler_t signal (int __sig, __sighandler_t __handler)
| ~~~~~~~~~~~~~~~^~~~~~~~~
splitvt.c:763:13: note: ‘winch’ declared here
763 | static void winch(sig)
| ^~~~~
/usr/include/signal.h:72:16: note: ‘__sighandler_t’ declared here
72 | typedef void (*__sighandler_t) (int);
| ^~~~~~~~~~~~~~
splitvt.c:770:19: error: too many arguments to function ‘init_vt100’; expected 0, have 1
770 | if ( (ptr=init_vt100(1)) != NULL ) {
| ^~~~~~~~~~ ~
vt100.h:4:14: note: declared here
4 | extern char *init_vt100(); /* Initialize the window */
| ^~~~~~~~~~
splitvt.c:772:17: error: too many arguments to function ‘finish’; expected 0, have 1
772 | finish(0);
| ^~~~~~ ~
splitvt.c:709:13: note: declared here
709 | static void finish(sig)
| ^~~~~~
splitvt.h:19:25: error: too many arguments to function ‘set_win’; expected 0, have 1
19 | #define SET_WIN() set_win(CUR_WIN())
| ^~~~~~~
splitvt.c:774:17: note: in expansion of macro ‘SET_WIN’
774 | SET_WIN();
| ^~~~~~~
vt100.h:5:14: note: declared here
5 | extern void set_win(); /* Move the cursor to current window */
| ^~~~~~~
splitvt.c: In function ‘insert_dash’:
splitvt.c:781:12: warning: old-style function definition [-Wold-style-definition]
781 | static int insert_dash(args)
| ^~~~~~~~~~~
splitvt.c: In function ‘main’:
splitvt.c:450:57: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
450 | write(thisfd, selection, strlen(selection));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
splitvt.c: In function ‘normal_input’:
splitvt.c:546:17: warning: ignoring return value of ‘read’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
546 | read(ttyfd, &c, 1);
| ^~~~~~~~~~~~~~~~~~
splitvt.c:591:35: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
591 | write(thisfd, selection, strlen(selection));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
splitvt.c:625:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
625 | write(thisfd, &c, 1);
| ^~~~~~~~~~~~~~~~~~~~
make[1]: *** [<builtin>: splitvt.o] Error 1
make[1]: Leaving directory '/build/reproducible-path/splitvt-1.6.6'
dh_auto_build: error: make -j8 returned exit code 2
make: *** [debian/rules:7: build] Error 25
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2
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