[Pkg-openssl-devel] Bug#1138319: mongo-c-driver: FTBFS with openssl 4.0

[Sebastian Andrzej Siewior]

Package: mongo-c-driver
Version: 2.2.4-1
Severity: normal
Tags: sid
control: affects -1 src:openssl
User: pkg-openssl-devel at lists.alioth.debian.org
Usertags: openssl-4.0

OpenSSL 4.0 is in experimental. This package fails to build against it:

| cd /build/reproducible-path/mongo-c-driver-2.2.4/obj-x86_64-linux-gnu/src/libmongoc && /usr/bin/cc -DHAVE_STDARG_H -DHAVE_UNISTD_H -DKMS_MESSAGE_ENABLE_CRYPTO -DKMS_MESSAGE_ENABLE_CRYPTO_LIBCRYPTO -DKMS_MESSAGE_LITTLE_ENDIAN -DKMS_MSG_STATIC -DMCOMMON_NAME_PREFIX=_mongoc_mcommon -DMONGOC_COMPILATION -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_MLIB_BUILD_CONFIG=None -D_XOPEN_SOURCE=700 -Dmongoc_shared_EXPORTS -I/build/reproducible-path/mongo-c-driver-2.2.4/src/uthash -I/build/reproducible-path/mongo-c-driver-2.2.4/src/kms-message/src -I/build/reproducible-path/mongo-c-driver-2.2.4/obj-x86_64-linux-gnu/src/libmongoc/src -I/build/reproducible-path/mongo-c-driver-2.2.4/src/libmongoc/src -I/build/reproducible-path/mongo-c-driver-2.2.4/src/common/src -I/build/reproducible-path/mongo-c-driver-2.2.4/obj-x86_64-linux-gnu/src -I/build/reproducible-path/mongo-c-driver-2.2.4/obj-x86_64-linux-gnu/src/common/src -I/build/reproducible-path/mongo-c-driver-2.2.4/src/libbson/src -I/build/reproducible-path/mongo-c-driver-2.2.4/obj-x86_64-linux-gnu/src/libbson/src -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/mongo-c-driver-2.2.4=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -std=c99 -fPIC -DUTF8PROC_EXPORTS -Werror=implicit -Werror=return-type -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=discarded-qualifiers -Werror=uninitialized -Werror=format -Werror=format=2 -Werror=format-diag -Werror=format-overflow=2 -Werror=format-signedness -Werror=format-truncation=2 -Werror -pedantic -Wall -Wempty-body -Wexpansion-to-defined -Winit-self -Wmissing-include-dirs -Wredundant-decls -Wshadow -Wstrict-prototypes -Wswitch-default -Wswitch-enum -Wundef -Wuninitialized -Wno-strict-aliasing -Wno-missing-braces -Wsign-compare -MD -MT src/libmongoc/CMakeFiles/mongoc_shared.dir/src/mongoc/mongoc-openssl.c.o -MF CMakeFiles/mongoc_shared.dir/src/mongoc/mongoc-openssl.c.o.d -o CMakeFiles/mongoc_shared.dir/src/mongoc/mongoc-openssl.c.o -c /build/reproducible-path/mongo-c-driver-2.2.4/src/libmongoc/src/mongoc/mongoc-openssl.c
| /build/reproducible-path/mongo-c-driver-2.2.4/src/libmongoc/src/mongoc/mongoc-openssl.c: In function ‘_get_issuer’:
| /build/reproducible-path/mongo-c-driver-2.2.4/src/libmongoc/src/mongoc/mongoc-openssl.c:478:16: error: assignment discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
|   478 |    issuer_name = X509_get_issuer_name(cert);
|       |                ^
| /build/reproducible-path/mongo-c-driver-2.2.4/src/libmongoc/src/mongoc/mongoc-openssl.c:481:22: error: assignment discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
|   481 |       candidate_name = X509_get_subject_name(candidate);
|       |                      ^
| /build/reproducible-path/mongo-c-driver-2.2.4/src/libmongoc/src/mongoc/mongoc-openssl.c: In function ‘_get_must_staple’:
| /build/reproducible-path/mongo-c-driver-2.2.4/src/libmongoc/src/mongoc/mongoc-openssl.c:623:13: error: assignment discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
|   623 |    ext_data = X509_EXTENSION_get_data(ext);
|       |             ^
| cc1: all warnings being treated as errors
| make[3]: *** [src/libmongoc/CMakeFiles/mongoc_shared.dir/build.make:1678: src/libmongoc/CMakeFiles/mongoc_shared.dir/src/mongoc/mongoc-openssl.c.o] Error 1
| make[3]: Leaving directory '/build/reproducible-path/mongo-c-driver-2.2.4/obj-x86_64-linux-gnu'

Full buildlog
 	https://breakpoint.cc/openssl-rebuild/logs-4/attempted/mongo-c-driver_2.2.4-1_amd64-2026-04-19T11:07:05Z

Sebastian