[From nobody Thu Nov 5 20:37:09 2026 Received: (at submit) by bugs.debian.org; 5 Nov 2026 12:09:40 +0000 X-Spam-Checker-Version: SpamAssassin 4.0.1-bugs.debian.org_2005_01_02 (2024-03-25) on buxtehude.debian.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=4.0 tests=BAYES_00,FOURLA, FVGT_m_MULTI_ODD,NO_RELAYS,XMAILER_REPORTBUG autolearn=ham autolearn_force=no version=4.0.1-bugs.debian.org_2005_01_02 X-Spam-Bayes: score:0.0000 Tokens: new, 47; hammy, 150; neutral, 218; spammy, 0. spammytokens: hammytokens:0.000-+--XDebbugsCc, 0.000-+--X-Debbugs-Cc, 0.000-+--H*Ad:N*Bug, 0.000-+--HTo:N*Debian, 0.000-+--forky Return-path: <seb128@ubuntu.com> Received: via submission by buxtehude.debian.org with esmtp (Exim 4.96) (envelope-from <seb128@ubuntu.com>) id 1xOwHh-00EDfh-3B for submit@bugs.debian.org; Thu, 05 Nov 2026 12:09:40 +0000 Content-Type: multipart/mixed; boundary="===============6951759930151267041==" MIME-Version: 1.0 From: Sebastien Bacher <seb128@ubuntu.com> To: Debian Bug Tracking System <submit@bugs.debian.org> Subject: nginx-dev: conf_flags corrupted when built with dash 0.5.13, modules FTBFS Message-ID: <179388057114.228078.3858745707794646799.reportbug@seb128-ThinkPad-T16> X-Mailer: reportbug 13.2.0+ubuntu1 Date: Thu, 05 Nov 2026 13:09:31 +0100 Delivered-To: submit@bugs.debian.org This is a multi-part MIME message sent by reportbug. --===============6951759930151267041== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline Source: nginx Version: 1.30.4-7ubuntu1 Severity: important Tags: patch ftbfs X-Debbugs-Cc: seb128@ubuntu.com User: ubuntu-devel@lists.ubuntu.com Usertags: origin-ubuntu tenacious ubuntu-patch Dear Maintainer, nginx-dev built with dash 0.5.13 ships a broken /usr/share/nginx/src/conf_flags, and every module built against it fails to build. Debian still has dash 0.5.12, so you don't see it yet, but Ubuntu has dash 0.5.13 and all 25 nginx module rebuilds there fail on every architecture. debian/rules writes the file with: echo "NGX_CONF_FLAGS=( $${flags} )" > $(BUILDDIR_src)/conf_flags and the flags contain: --override-system="$(... | sed 's/-.*$//; s/^./\U&/; s/Gnu/\U&/g;')" Since 0.5.13, the dash echo builtin understands the \uXXXX and \UXXXXXXXX escapes (they came with $'...' support, upstream commit 776424a8f915 "parser: Add dollar single quote"). Here no hex digits follow \U, and dash writes a NUL byte in its place: $ grep -ao 's/^./.&/' /usr/share/nginx/src/conf_flags | od -c 0000000 s / ^ . / \0 & / \n The sed expression then no longer uppercases the first letter, so a module build calls configure with --override-system=linux. auto/os/conf only matches "Linux:*", so the build falls back to the generic Unix configuration and never includes src/os/unix/ngx_linux_config.h. That means _GNU_SOURCE is not defined (note accept4(), sched_setaffinity() and strerrordesc_np() reported "not found"), and glibc then doesn't define struct in6_pktinfo: checking for OS + linux 3.16.0 x86_64 ... src/event/ngx_event_udp.h:46:27: error: field 'pkt6' has incomplete type 46 | struct in6_pktinfo pkt6; Full log (libnginx-mod-http-auth-jwt, built against nginx-dev 1.30.6-2ubuntu1): https://launchpadlibrarian.net/883485254/buildlog_ubuntu-tenacious-amd64.libnginx-mod-http-auth-jwt_2.5.0-3build1_BUILDING.txt.gz The attached patch writes the file with printf '%s\n', which doesn't interpret backslashes in its argument, so it works with any /bin/sh. The only Ubuntu delta in debian/rules is --build=Ubuntu, so this affects Debian as soon as dash 0.5.13 reaches unstable. Ubuntu bug: https://bugs.launchpad.net/bugs/2173081 Thanks, Sebastien -- System Information: Debian Release: forky/sid APT prefers resolute-updates APT policy: (500, 'resolute-updates'), (500, 'resolute-security'), (500, 'resolute'), (100, 'resolute-backports') Architecture: amd64 (x86_64) Kernel: Linux 7.0.0-42-generic (SMP w/16 CPU threads; PREEMPT) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_WARN, TAINT_OOT_MODULE Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled --===============6951759930151267041== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="0001-d-rules-write-conf_flags-with-printf.patch" Description: write nginx-dev's conf_flags with printf instead of echo The --override-system flag contains the sed expression 's/^./\U&/'. dash 0.5.13's echo builtin parses \U as a Unicode escape and, with no hex digits after it, writes a NUL byte, so modules configure for a generic OS instead of Linux and fail to build. Author: Sebastien Bacher <sebastien.bacher@canonical.com> Forwarded: not-needed Last-Update: 2026-11-05 --- a/debian/rules +++ b/debian/rules @@ -104,7 +104,7 @@ override_dh_auto_build-indep: sed -i '/^# create Makefile/,/^END$$/d' $(BUILDDIR_src)/auto/make $(BUILDDIR_src)/auto/init $(BUILDDIR_src)/auto/install find $(CURDIR)/src -type f -name '*.h' -printf 'src/%P\0' | tar -C $(CURDIR) --null --files-from - -c | tar -C $(BUILDDIR_src)/ -x if [ -e $(CURDIR)/configure ]; then cp $(CURDIR)/configure $(BUILDDIR_src)/; fi - echo "NGX_CONF_FLAGS=( $${flags} )" > $(BUILDDIR_src)/conf_flags + printf '%s\n' "NGX_CONF_FLAGS=( $${flags} )" > $(BUILDDIR_src)/conf_flags pod2man debian/debhelper/dh_nginx > $(BUILDDIR_src)/dh_nginx.1 override_dh_install-arch: --===============6951759930151267041==-- ]