[Pkg-kbd-devel] Bug#1075109: kbd: ftbfs with GCC-14

[Matthias Klose]

Package: src:kbd
Version: 2.6.4-2
Severity: important
Tags: sid trixie
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-14

[This bug is 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-14/g++-14, but succeeds to build with gcc-13/g++-13. The
severity of this report will be raised before the trixie release.

The full build log can be found at:
http://qa-logs.debian.net/2024/07/01/kbd_2.6.4-2_unstable_gccexp.log
The last lines of the build log are at the end of this report.

To build with GCC 14, either set CC=gcc-14 CXX=g++-14 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

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-14/porting_to.html

[...]
codepage.c: In function ‘handle_codepage’:
codepage.c:284:9: warning: ignoring return value of ‘fread’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  284 |         fread(fonts, CPInfoHeader.size, 1, in);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc -O2 -g -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-z,relro  splitfont.c   -o splitfont
splitfont.c: In function ‘dosplit’:
splitfont.c:19:17: error: implicit declaration of function ‘exit’ [-Wimplicit-function-declaration]
   19 |                 exit(1);
      |                 ^~~~
splitfont.c:8:1: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
    7 | #include <sys/stat.h>
  +++ |+#include <stdlib.h>
    8 | 
splitfont.c:19:17: warning: incompatible implicit declaration of built-in function ‘exit’ [-Wbuiltin-declaration-mismatch]
   19 |                 exit(1);
      |                 ^~~~
splitfont.c:19:17: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
splitfont.c:21:13: error: implicit declaration of function ‘strlen’ [-Wimplicit-function-declaration]
   21 |         if (strlen(fontfile) >= sizeof(filename) - 4) {
      |             ^~~~~~
splitfont.c:8:1: note: include ‘<string.h>’ or provide a declaration of ‘strlen’
    7 | #include <sys/stat.h>
  +++ |+#include <string.h>
    8 | 
splitfont.c:21:13: warning: incompatible implicit declaration of built-in function ‘strlen’ [-Wbuiltin-declaration-mismatch]
   21 |         if (strlen(fontfile) >= sizeof(filename) - 4) {
      |             ^~~~~~
splitfont.c:21:13: note: include ‘<string.h>’ or provide a declaration of ‘strlen’
splitfont.c:23:17: warning: incompatible implicit declaration of built-in function ‘exit’ [-Wbuiltin-declaration-mismatch]
   23 |                 exit(1);
      |                 ^~~~
splitfont.c:23:17: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
splitfont.c: In function ‘main’:
splitfont.c:51:17: warning: incompatible implicit declaration of built-in function ‘exit’ [-Wbuiltin-declaration-mismatch]
   51 |                 exit(1);
      |                 ^~~~
splitfont.c:51:17: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
splitfont.c:56:17: warning: incompatible implicit declaration of built-in function ‘exit’ [-Wbuiltin-declaration-mismatch]
   56 |                 exit(1);
      |                 ^~~~
splitfont.c:56:17: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
splitfont.c:60:17: warning: incompatible implicit declaration of built-in function ‘exit’ [-Wbuiltin-declaration-mismatch]
   60 |                 exit(1);
      |                 ^~~~
splitfont.c:60:17: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
splitfont.c:64:17: warning: incompatible implicit declaration of built-in function ‘exit’ [-Wbuiltin-declaration-mismatch]
   64 |                 exit(1);
      |                 ^~~~
splitfont.c:64:17: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
splitfont.c:69:17: warning: incompatible implicit declaration of built-in function ‘exit’ [-Wbuiltin-declaration-mismatch]
   69 |                 exit(1);
      |                 ^~~~
splitfont.c:69:17: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
splitfont.c:74:17: warning: incompatible implicit declaration of built-in function ‘exit’ [-Wbuiltin-declaration-mismatch]
   74 |                 exit(1);
      |                 ^~~~
splitfont.c:74:17: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
splitfont.c:79:29: error: implicit declaration of function ‘strtoul’ [-Wimplicit-function-declaration]
   79 |                 to = from = strtoul(p, &q, 0);
      |                             ^~~~~~~
splitfont.c:86:25: warning: incompatible implicit declaration of built-in function ‘exit’ [-Wbuiltin-declaration-mismatch]
   86 |                         exit(1);
      |                         ^~~~
splitfont.c:86:25: note: include ‘<stdlib.h>’ or provide a declaration of ‘exit’
make[2]: *** [<builtin>: splitfont] Error 1
make[2]: Leaving directory '/<<PKGBUILDDIR>>/contrib'
make[1]: *** [debian/rules:61: override_dh_auto_build] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:25: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2