Bug#1097248: libpdl-io-hdf5-perl: ftbfs with GCC-15

[Matthias Klose]

Package: src:libpdl-io-hdf5-perl
Version: 1:0.761-1
Severity: important
Tags: sid forky
User: debian-gcc at 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/libpdl-io-hdf5-perl_0.761-1_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

[...]
make[1]: Entering directory '/build/reproducible-path/libpdl-io-hdf5-perl-0.761'
"/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- HDF5.bs blib/arch/auto/PDL/IO/HDF5/HDF5.bs 644
PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(1, 'blib/lib', 'blib/arch')" t/*.t
lib/PDL/PP.pm: loadable library and perl binaries are mismatched (got first handshake key 0xf200080, needed 0xeb80080)
t/attribPDL.t ... 
Dubious, test returned 1 (wstat 256, 0x100)
No subtests run 
lib/PDL/PP.pm: loadable library and perl binaries are mismatched (got first handshake key 0xf200080, needed 0xeb80080)
t/file.t ........ 
Dubious, test returned 1 (wstat 256, 0x100)
No subtests run 
lib/PDL/PP.pm: loadable library and perl binaries are mismatched (got first handshake key 0xf200080, needed 0xeb80080)
t/group.t ....... 
Dubious, test returned 1 (wstat 256, 0x100)
No subtests run 
lib/PDL/PP.pm: loadable library and perl binaries are mismatched (got first handshake key 0xf200080, needed 0xeb80080)
t/reference.t ... 
Dubious, test returned 1 (wstat 256, 0x100)
No subtests run 
lib/PDL/PP.pm: loadable library and perl binaries are mismatched (got first handshake key 0xf200080, needed 0xeb80080)
t/total.t ....... 
Dubious, test returned 1 (wstat 256, 0x100)
No subtests run 
lib/PDL/PP.pm: loadable library and perl binaries are mismatched (got first handshake key 0xf200080, needed 0xeb80080)
t/unlink.t ...... 
Dubious, test returned 1 (wstat 256, 0x100)
No subtests run 
lib/PDL/PP.pm: loadable library and perl binaries are mismatched (got first handshake key 0xf200080, needed 0xeb80080)
t/vlenString.t .. 
Dubious, test returned 1 (wstat 256, 0x100)
No subtests run 
lib/PDL/PP.pm: loadable library and perl binaries are mismatched (got first handshake key 0xf200080, needed 0xeb80080)
t/xData.t ....... 
Dubious, test returned 1 (wstat 256, 0x100)
No subtests run 

Test Summary Report
-------------------
t/attribPDL.t (Wstat: 256 (exited 1) Tests: 0 Failed: 0)
  Non-zero exit status: 1
  Parse errors: No plan found in TAP output
t/file.t      (Wstat: 256 (exited 1) Tests: 0 Failed: 0)
  Non-zero exit status: 1
  Parse errors: No plan found in TAP output
t/group.t     (Wstat: 256 (exited 1) Tests: 0 Failed: 0)
  Non-zero exit status: 1
  Parse errors: No plan found in TAP output
t/reference.t (Wstat: 256 (exited 1) Tests: 0 Failed: 0)
  Non-zero exit status: 1
  Parse errors: No plan found in TAP output
t/total.t     (Wstat: 256 (exited 1) Tests: 0 Failed: 0)
  Non-zero exit status: 1
  Parse errors: No plan found in TAP output
t/unlink.t    (Wstat: 256 (exited 1) Tests: 0 Failed: 0)
  Non-zero exit status: 1
  Parse errors: No plan found in TAP output
t/vlenString.t (Wstat: 256 (exited 1) Tests: 0 Failed: 0)
  Non-zero exit status: 1
  Parse errors: No plan found in TAP output
t/xData.t     (Wstat: 256 (exited 1) Tests: 0 Failed: 0)
  Non-zero exit status: 1
  Parse errors: No plan found in TAP output
Files=8, Tests=0,  1 wallclock secs ( 0.06 usr  0.02 sys +  0.95 cusr  0.18 csys =  1.21 CPU)
Result: FAIL
Failed 8/8 test programs. 0/0 subtests failed.
make[1]: *** [Makefile:1065: test_dynamic] Error 1
make[1]: Leaving directory '/build/reproducible-path/libpdl-io-hdf5-perl-0.761'
dh_auto_test: error: make -j8 test TEST_VERBOSE=1 returned exit code 2
make: *** [debian/rules:15: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2