[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/gmtp_1.3.11-3.1_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

[...]
      |                 ^~
In file included from /usr/include/glib-2.0/glib.h:68,
                 from mtp.h:26,
                 from mtp.c:15:
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
mtp.c:2129:29: warning: ‘g_pattern_match_string’ is deprecated: Use 'g_pattern_spec_match_string' instead [-Wdeprecated-declarations]
 2129 |                             if ((g_pattern_match_string(pspec, tmpstring1) == TRUE) ||
      |                             ^~
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
mtp.c:2130:37: warning: ‘g_pattern_match_string’ is deprecated: Use 'g_pattern_spec_match_string' instead [-Wdeprecated-declarations]
 2130 |                                     (g_pattern_match_string(pspec, tmpstring2) == TRUE) ||
      |                                     ^
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
mtp.c:2131:37: warning: ‘g_pattern_match_string’ is deprecated: Use 'g_pattern_spec_match_string' instead [-Wdeprecated-declarations]
 2131 |                                     (g_pattern_match_string(pspec, tmpstring3) == TRUE) ||
      |                                     ^
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
mtp.c:2132:37: warning: ‘g_pattern_match_string’ is deprecated: Use 'g_pattern_spec_match_string' instead [-Wdeprecated-declarations]
 2132 |                                     (g_pattern_match_string(pspec, tmpstring4) == TRUE)) {
      |                                     ^
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
mtp.c:2215:13: warning: ‘g_pattern_match_string’ is deprecated: Use 'g_pattern_spec_match_string' instead [-Wdeprecated-declarations]
 2215 |             if ((g_pattern_match_string(pspec, tmpstring1) == TRUE) ||
      |             ^~
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
mtp.c:2216:21: warning: ‘g_pattern_match_string’ is deprecated: Use 'g_pattern_spec_match_string' instead [-Wdeprecated-declarations]
 2216 |                     (g_pattern_match_string(pspec, tmpstring2) == TRUE) ||
      |                     ^
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
mtp.c:2217:21: warning: ‘g_pattern_match_string’ is deprecated: Use 'g_pattern_spec_match_string' instead [-Wdeprecated-declarations]
 2217 |                     (g_pattern_match_string(pspec, tmpstring3) == TRUE) ||
      |                     ^
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
mtp.c:2218:21: warning: ‘g_pattern_match_string’ is deprecated: Use 'g_pattern_spec_match_string' instead [-Wdeprecated-declarations]
 2218 |                     (g_pattern_match_string(pspec, tmpstring4) == TRUE)) {
      |                     ^
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
mtp.c: In function ‘folderSearch’:
mtp.c:2295:9: warning: ‘g_pattern_match_string’ is deprecated: Use 'g_pattern_spec_match_string' instead [-Wdeprecated-declarations]
 2295 |         if (g_pattern_match_string(pspec, tmpstring) == TRUE) {
      |         ^~
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
make[3]: Leaving directory '/build/reproducible-path/gmtp-1.3.11/src'
make[2]: *** [Makefile:422: all-recursive] Error 1
make[2]: Leaving directory '/build/reproducible-path/gmtp-1.3.11'
make[1]: *** [Makefile:363: all] Error 2
make[1]: Leaving directory '/build/reproducible-path/gmtp-1.3.11'
dh_auto_build: error: make -j8 returned exit code 2
make: *** [debian/rules:15: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2