Bug#1133526: liborigin2: ftbfs with GCC-16
Emanuele Rocca
ema at debian.org
Mon Apr 13 14:05:58 BST 2026
Package: src:liborigin2
Version: 2:20110117-7
Severity: important
Tags: sid forky ftbfs
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-16
Hi,
liborigin2 fails to build in a test rebuild on at least amd64 and arm64 with
gcc-16/g++-16, but builds properly with gcc-15/g++-15. The severity of this
report will be raised before the forky release.
The full build log can be found at:
https://people.debian.org/~ema/gcc-16-rebuilds/output-1/liborigin2_arm64.build.xz
The last lines of the build log are at the end of this report.
To build with GCC 16, either set CC=gcc-16 CXX=g++-16 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.
apt-get -t=experimental install g++
Common build failures include unused (but set) variables, array subscripts
partly outside array bounds, and new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-16/porting_to.html
Please only close this issue after double-checking that the package can be
built correctly with GCC 16.
Please do not reassign this bug to another package. If a fix in another package
is required, then file a bug for the other package (or clone), and mark this
bug as blocked by the bug in the other package.
[...]
OriginDefaultParser.cpp:196:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
196 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:202:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
202 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:210:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
210 | fread(&size,4,1,f);
| ~~~~~^~~~~~~~~~~~~
OriginDefaultParser.cpp:211:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
211 | fread(&c,1,1,f); // skip '\n'
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:239:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
239 | fread(&value,8,1,f);
| ~~~~~^~~~~~~~~~~~~~
OriginDefaultParser.cpp:253:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
253 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:256:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
256 | fread(&nbytes,4,1,f);
| ~~~~~^~~~~~~~~~~~~~~
OriginDefaultParser.cpp:267:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
267 | fread(&c,1,1,f); // skip '\n'
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:269:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
269 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:270:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
270 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:277:46: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
277 | fread(&a,valuesize,1,f);
| ~~~~~^~~~~~~~~~~~~~~~~~
OriginDefaultParser.cpp:284:46: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
284 | fread(stmp,valuesize,1,f);
| ~~~~~^~~~~~~~~~~~~~~~~~~~
OriginDefaultParser.cpp:296:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
296 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:298:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
298 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:299:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
299 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:301:22: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
301 | fread(&col_found,4,1,f);
| ~~~~~^~~~~~~~~~~~~~~~~~
OriginDefaultParser.cpp:303:22: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
303 | fread(&c,1,1,f); // skip '\n'
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:349:22: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
349 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:359:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
359 | fread(&c,1,1,f);
| ~~~~~^~~~~~~~~~
OriginDefaultParser.cpp:375:22: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
375 | fread(&name,25,1,f);
| ~~~~~^~~~~~~~~~~~~~
OriginDefaultParser.cpp:413:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
413 | fread(&name,25,1,f);
| ~~~~~^~~~~~~~~~~~~~
OriginDefaultParser.cpp:416:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
416 | fread(&c, 1, 1, f);
| ~~~~~^~~~~~~~~~~~~
make[1]: *** [Makefile:395: tmp/OriginDefaultParser.o] Error 1
make[1]: Leaving directory '/build/reproducible-path/liborigin2-20110117'
dh_auto_build: error: make -j128 returned exit code 2
make: *** [debian/rules:8: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
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