diff --git a/devel/bazel5/Makefile b/devel/bazel5/Makefile
--- a/devel/bazel5/Makefile
+++ b/devel/bazel5/Makefile
@@ -16,7 +16,6 @@
 BROKEN_armv6=	fails to package: cp: bazel: No such file or directory
 BROKEN_armv7=	fails to package: cp: bazel: No such file or directory
 BROKEN_FreeBSD_12_powerpc64=	fails to compile: Action failed to execute: java.io.IOException: Cannot run program /usr/bin/clang
-BROKEN_FreeBSD_14=	__builtin_offsetof is a Clang extension
 
 BUILD_DEPENDS=	bash:shells/bash \
 		zip:archivers/zip
diff --git a/devel/bazel5/files/extra-patch-upb_bazel_build__defs.bzl b/devel/bazel5/files/extra-patch-upb_bazel_build__defs.bzl
--- a/devel/bazel5/files/extra-patch-upb_bazel_build__defs.bzl
+++ b/devel/bazel5/files/extra-patch-upb_bazel_build__defs.bzl
@@ -1,5 +1,5 @@
---- bazel/build_defs.bzl.orig	2022-01-20 13:04:32.306692000 +0100
-+++ bazel/build_defs.bzl	2022-01-20 13:05:02.002057000 +0100
+--- bazel/build_defs.bzl.orig	2023-08-27 11:49:04.950868000 +0100
++++ bazel/build_defs.bzl	2023-08-27 11:51:17.441304000 +0100
 @@ -35,6 +35,7 @@
          # "-Wshorten-64-to-32",  # not in GCC (and my Kokoro images doesn't have Clang)
          "-Werror",
@@ -8,3 +8,11 @@
          # copybara:strip_end
      ],
  })
+@@ -49,6 +50,7 @@
+         "-Werror=pedantic",
+         "-Wall",
+         "-Wstrict-prototypes",
++        "-Wno-gnu-offsetof-extensions",
+         # GCC (at least) emits spurious warnings for this that cannot be fixed
+         # without introducing redundant initialization (with runtime cost):
+         #   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635