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-9/g++-9, but succeeds to build with gcc-8/g++-8. 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/gcc9-20190321/libusrsctp_0.9.3.0+20190127-2_unstable_gcc9.log
The last lines of the build log are at the end of this report.

To build with GCC 9, either set CC=gcc-9 CXX=g++-9 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-9/porting_to.html

GCC 9 also passes the linker option --as-needed by default; typical
build issues are passing libraries before object files to the linker,
or underlinking of convenience libraries built from the same source.

[...]
/bin/bash ../libtool  --tag=CC   --mode=compile gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" -DPACKAGE_STRING=\"libusrsctp\ 0.9.3.0\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I.   -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c -o netinet/libusrsctp_la-sctp_indata.lo `test -f 'netinet/sctp_indata.c' || echo './'`netinet/sctp_indata.c
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_cc_functions.c  -fPIC -DPIC -o netinet/.libs/libusrsctp_la-sctp_cc_functions.o
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_callout.c -o netinet/libusrsctp_la-sctp_callout.o >/dev/null 2>&1
/bin/bash ../libtool  --tag=CC   --mode=compile gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" -DPACKAGE_STRING=\"libusrsctp\ 0.9.3.0\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I.   -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c -o netinet/libusrsctp_la-sctp_input.lo `test -f 'netinet/sctp_input.c' || echo './'`netinet/sctp_input.c
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_crc32.c  -fPIC -DPIC -o netinet/.libs/libusrsctp_la-sctp_crc32.o
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_indata.c  -fPIC -DPIC -o netinet/.libs/libusrsctp_la-sctp_indata.o
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_cc_functions.c -o netinet/libusrsctp_la-sctp_cc_functions.o >/dev/null 2>&1
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_crc32.c -o netinet/libusrsctp_la-sctp_crc32.o >/dev/null 2>&1
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_input.c  -fPIC -DPIC -o netinet/.libs/libusrsctp_la-sctp_input.o
/bin/bash ../libtool  --tag=CC   --mode=compile gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" -DPACKAGE_STRING=\"libusrsctp\ 0.9.3.0\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I.   -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c -o netinet/libusrsctp_la-sctp_output.lo `test -f 'netinet/sctp_output.c' || echo './'`netinet/sctp_output.c
/bin/bash ../libtool  --tag=CC   --mode=compile gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" -DPACKAGE_STRING=\"libusrsctp\ 0.9.3.0\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I.   -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c -o netinet/libusrsctp_la-sctp_pcb.lo `test -f 'netinet/sctp_pcb.c' || echo './'`netinet/sctp_pcb.c
netinet/sctp_input.c: In function 'sctp_handle_stream_reset_response':
netinet/sctp_input.c:3879:64: error: taking address of packed member of 'struct sctp_stream_reset_out_request' may result in an unaligned pointer value [-Werror=address-of-packed-member]
 3879 |      sctp_reset_out_streams(stcb, number_entries, req_out_param->list_of_streams);
      |                                                   ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
netinet/sctp_input.c:3892:66: error: taking address of packed member of 'struct sctp_stream_reset_out_request' may result in an unaligned pointer value [-Werror=address-of-packed-member]
 3892 |      sctp_reset_clear_pending(stcb, number_entries, req_out_param->list_of_streams);
      |                                                     ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
netinet/sctp_input.c: In function 'sctp_handle_str_reset_request_out':
netinet/sctp_input.c:4170:50: error: taking address of packed member of 'struct sctp_stream_reset_out_request' may result in an unaligned pointer value [-Werror=address-of-packed-member]
 4170 |    sctp_reset_in_stream(stcb, number_entries, req->list_of_streams);
      |                                               ~~~^~~~~~~~~~~~~~~~~
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_output.c  -fPIC -DPIC -o netinet/.libs/libusrsctp_la-sctp_output.o
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_pcb.c  -fPIC -DPIC -o netinet/.libs/libusrsctp_la-sctp_pcb.o
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_indata.c -o netinet/libusrsctp_la-sctp_indata.o >/dev/null 2>&1
netinet/sctp_output.c: In function 'send_forward_tsn':
netinet/sctp_output.c:10978:22: error: converting a packed 'struct sctp_forward_tsn_chunk' pointer (alignment 1) to a 'struct sctp_strseq_mid' pointer (alignment 4) may result in an unaligned pointer value [-Werror=address-of-packed-member]
10978 |   strseq_m = (struct sctp_strseq_mid *)fwdtsn;
      |                      ^~~~~~~~~~~~~~~
In file included from netinet/sctp_output.c:46:
./netinet/sctp_header.h:407:8: note: defined here
  407 | struct sctp_forward_tsn_chunk {
      |        ^~~~~~~~~~~~~~~~~~~~~~
./netinet/sctp_header.h:418:8: note: defined here
  418 | struct sctp_strseq_mid {
      |        ^~~~~~~~~~~~~~~
netinet/sctp_output.c: In function 'sctp_send_sack':
netinet/sctp_output.c:11372:3: error: converting a packed 'struct sctp_gap_ack_block' pointer (alignment 1) to a 'uint32_t' {aka 'unsigned int'} pointer (alignment 4) may result in an unaligned pointer value [-Werror=address-of-packed-member]
11372 |   dup = (uint32_t *) gap_descriptor;
      |   ^~~
In file included from netinet/sctp_output.c:46:
./netinet/sctp_header.h:265:8: note: defined here
  265 | struct sctp_gap_ack_block {
      |        ^~~~~~~~~~~~~~~~~~
netinet/sctp_output.c: In function 'sctp_send_resp_msg':
netinet/sctp_output.c:11791:17: error: converting a packed 'struct sctphdr' pointer (alignment 1) to a 'struct udphdr' pointer (alignment 2) may result in an unaligned pointer value [-Werror=address-of-packed-member]
11791 |   udp = (struct udphdr *)shout;
      |                 ^~~~~~
In file included from ./netinet/sctp_os_userspace.h:1059,
                 from ./netinet/sctp_os.h:74,
                 from netinet/sctp_output.c:40:
./netinet/sctp.h:60:8: note: defined here
   60 | struct sctphdr {
      |        ^~~~~~~
In file included from netinet/sctp_output.c:64:
/usr/include/netinet/udp.h:55:8: note: defined here
   55 | struct udphdr
      |        ^~~~~~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:719: netinet/libusrsctp_la-sctp_input.lo] Error 1
make[2]: *** Waiting for unfinished jobs....
cc1: all warnings being treated as errors
libtool: compile:  gcc -DPACKAGE_NAME=\"libusrsctp\" -DPACKAGE_TARNAME=\"libusrsctp\" -DPACKAGE_VERSION=\"0.9.3.0\" "-DPACKAGE_STRING=\"libusrsctp 0.9.3.0\"" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\" -DPACKAGE=\"libusrsctp\" -DVERSION=\"0.9.3.0\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DSCTP_DEBUG=1 -DINET=1 -DINET6=1 -DHAVE_SOCKET=1 -DHAVE_INET_ADDR=1 -DHAVE_STDATOMIC_H=1 -DHAVE_SYS_QUEUE_H=1 -DHAVE_LINUX_IF_ADDR_H=1 -DHAVE_LINUX_RTNETLINK_H=1 -DHAVE_NETINET_IP_ICMP_H=1 -I. -Wdate-time -D_FORTIFY_SOURCE=2 -DSCTP_PROCESS_LEVEL_LOCKS -DSCTP_SIMPLE_ALLOCATOR -D__Userspace__ -D__Userspace_os_Linux -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127=. -fstack-protector-strong -Wformat -Werror=format-security -std=c99 -pthread -D_GNU_SOURCE -pedantic -Wall -Werror -g -O0 -c netinet/sctp_pcb.c -o netinet/libusrsctp_la-sctp_pcb.o >/dev/null 2>&1
make[2]: *** [Makefile:726: netinet/libusrsctp_la-sctp_output.lo] Error 1
make[2]: Leaving directory '/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127/usrsctplib'
make[1]: *** [Makefile:410: all-recursive] Error 1
make[1]: Leaving directory '/<<BUILDDIR>>/libusrsctp-0.9.3.0+20190127'
dh_auto_build: make -j4 returned exit code 2
make: *** [debian/rules:17: binary-arch] Error 2
dpkg-buildpackage: error: debian/rules binary-arch subprocess returned exit status 2

control: severity -1 important

Quoting Matthias Klose (2019-03-27 20:46:45)

[...]

Temporarily setting -Wno-address-of-packed-member to suppress this.

Apparently the code works fine, and in the past upstream suppressed this
type of warnings by default, dropping it only when older compilers
failed to parse that build flag (by fixing the code issue at the time).

Lowering (but not closing) this bug as reminder to have this issue fixed
properly.


 - Jonas