[Pkg-nginx-maintainers] Bug#957605: nginx: ftbfs with GCC-10

[Matthias Klose]

Package: src:nginx
Version: 1.16.1-3
Severity: normal
Tags: sid bullseye
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-10

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-10/g++-10, but succeeds to build with gcc-9/g++-9. The
severity of this report will be raised before the bullseye release,
so nothing has to be done for the buster release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc10-20200225/nginx_1.16.1-3_unstable_gcc10.log
The last lines of the build log are at the end of this report.

To build with GCC 10, either set CC=gcc-10 CXX=g++-10 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-10/porting_to.html

[...]
objs/addon/src/ngx_http_echo_var.o \
objs/addon/src/ngx_http_echo_handler.o \
objs/addon/src/ngx_http_echo_filter.o \
objs/addon/src/ngx_http_echo_sleep.o \
objs/addon/src/ngx_http_echo_location.o \
objs/addon/src/ngx_http_echo_echo.o \
objs/addon/src/ngx_http_echo_request_info.o \
objs/addon/src/ngx_http_echo_subrequest.o \
objs/addon/src/ngx_http_echo_foreach.o \
objs/ngx_http_echo_module_modules.o \
-Wl,-z,relro -Wl,-z,now -fPIC \
-shared
cc -o objs/ngx_http_upstream_fair_module.so \
objs/addon/http-upstream-fair/ngx_http_upstream_fair_module.o \
objs/ngx_http_upstream_fair_module_modules.o \
-Wl,-z,relro -Wl,-z,now -fPIC \
-shared
cc -o objs/ngx_http_subs_filter_module.so \
objs/addon/http-subs-filter/ngx_http_subs_filter_module.o \
objs/ngx_http_subs_filter_module_modules.o \
-Wl,-z,relro -Wl,-z,now -fPIC \
-shared
cc -o objs/ngx_mail_module.so \
objs/src/mail/ngx_mail.o \
objs/src/mail/ngx_mail_core_module.o \
objs/src/mail/ngx_mail_handler.o \
objs/src/mail/ngx_mail_parse.o \
objs/src/mail/ngx_mail_ssl_module.o \
objs/src/mail/ngx_mail_pop3_module.o \
objs/src/mail/ngx_mail_pop3_handler.o \
objs/src/mail/ngx_mail_imap_module.o \
objs/src/mail/ngx_mail_imap_handler.o \
objs/src/mail/ngx_mail_smtp_module.o \
objs/src/mail/ngx_mail_smtp_handler.o \
objs/src/mail/ngx_mail_auth_http_module.o \
objs/src/mail/ngx_mail_proxy_module.o \
objs/ngx_mail_module_modules.o \
-Wl,-z,relro -Wl,-z,now -fPIC \
-shared
cc -o objs/ngx_stream_module.so \
objs/src/stream/ngx_stream.o \
objs/src/stream/ngx_stream_variables.o \
objs/src/stream/ngx_stream_script.o \
objs/src/stream/ngx_stream_handler.o \
objs/src/stream/ngx_stream_core_module.o \
objs/src/stream/ngx_stream_log_module.o \
objs/src/stream/ngx_stream_proxy_module.o \
objs/src/stream/ngx_stream_upstream.o \
objs/src/stream/ngx_stream_upstream_round_robin.o \
objs/src/stream/ngx_stream_write_filter_module.o \
objs/src/stream/ngx_stream_ssl_module.o \
objs/src/stream/ngx_stream_limit_conn_module.o \
objs/src/stream/ngx_stream_access_module.o \
objs/src/stream/ngx_stream_geo_module.o \
objs/src/stream/ngx_stream_map_module.o \
objs/src/stream/ngx_stream_split_clients_module.o \
objs/src/stream/ngx_stream_return_module.o \
objs/src/stream/ngx_stream_upstream_hash_module.o \
objs/src/stream/ngx_stream_upstream_least_conn_module.o \
objs/src/stream/ngx_stream_upstream_random_module.o \
objs/src/stream/ngx_stream_upstream_zone_module.o \
objs/src/stream/ngx_stream_ssl_preread_module.o \
objs/ngx_stream_module_modules.o \
-Wl,-z,relro -Wl,-z,now -fPIC \
-shared
make[3]: Leaving directory '/<<PKGBUILDDIR>>/debian/build-full'
make[2]: Leaving directory '/<<PKGBUILDDIR>>/debian/build-full'
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:141: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2