#1136783 switchsh: FTBFS: switchsh.c:55:18: error: implicit declaration of function 'open'; did you mean 'popen'? [-Wimplicit-function-declaration]

Package:
src:switchsh
Source:
src:switchsh
Submitter:
Santiago Vila
Date:
2026-06-26 17:21:03 UTC
Severity:
normal
Tags:
#1136783#5
Date:
2026-05-15 18:10:32 UTC
From:
To:
Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202605/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:switchsh, so that this is still
visible in the BTS web page for this package.

Thanks.
--------------------------------------------------------------------------------
[...]
 debian/rules clean
dh clean
   debian/rules override_dh_auto_clean
make[1]: Entering directory '/<<PKGBUILDDIR>>'
rm -f switchsh
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   dh_clean
 debian/rules binary
dh binary
   dh_update_autotools_config
   dh_autoreconf
   debian/rules override_dh_auto_build
make[1]: Entering directory '/<<PKGBUILDDIR>>'
/usr/bin/make switchsh
make[2]: Entering directory '/<<PKGBUILDDIR>>'
x86_64-linux-gnu-gcc -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -pedantic -Werror -Wextra -Wformat -Wformat-security -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-z,relro -Wl,-z,now  switchsh.c   -o switchsh
switchsh.c: In function ‘main’:
switchsh.c:55:18: error: implicit declaration of function ‘open’; did you mean ‘popen’? [-Wimplicit-function-declaration]
   55 |     int bashfd = open(bashpath, O_PATH | O_NOFOLLOW | O_CLOEXEC);
      |                  ^~~~
      |                  popen
switchsh.c:55:33: error: ‘O_PATH’ undeclared (first use in this function)
   55 |     int bashfd = open(bashpath, O_PATH | O_NOFOLLOW | O_CLOEXEC);
      |                                 ^~~~~~
switchsh.c:55:33: note: each undeclared identifier is reported only once for each function it appears in
switchsh.c:55:42: error: ‘O_NOFOLLOW’ undeclared (first use in this function); did you mean ‘UMOUNT_NOFOLLOW’?
   55 |     int bashfd = open(bashpath, O_PATH | O_NOFOLLOW | O_CLOEXEC);
      |                                          ^~~~~~~~~~
      |                                          UMOUNT_NOFOLLOW
make[2]: *** [<builtin>: switchsh] Error 1
make[2]: Leaving directory '/<<PKGBUILDDIR>>'
make[1]: *** [debian/rules:12: override_dh_auto_build] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:22: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
--------------------------------------------------------------------------------

#1136783#10
Date:
2026-06-13 05:12:01 UTC
From:
To:
Dear maintainer,

I've prepared an NMU for switchsh (versioned as 0~20070801-5.1) and
uploaded it to DELAYED/14. Please feel free to tell me if I should
cancel it.

cu
Adrian

#1136783#19
Date:
2026-06-26 17:19:14 UTC
From:
To:
We believe that the bug you reported is fixed in the latest version of
switchsh, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1136783@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Adrian Bunk <bunk@debian.org> (supplier of updated switchsh package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 13 Jun 2026 08:10:23 +0300
Source: switchsh
Architecture: source
Version: 0~20070801-5.1
Distribution: unstable
Urgency: medium
Maintainer: Raphael Geissert <geissert@debian.org>
Changed-By: Adrian Bunk <bunk@debian.org>
Closes: 1136783
Changes:
 switchsh (0~20070801-5.1) unstable; urgency=medium
 .
   * Non-maintainer upload.
   * Fix FTBFS. (Closes: #1136783)
Checksums-Sha1:
 8280997dd20427d21309783b822abba05473a5bf 1863 switchsh_0~20070801-5.1.dsc
 acc88f347e52ae2f6fb4a8ce0b7e8948e4aa4a27 6656 switchsh_0~20070801-5.1.debian.tar.xz
Checksums-Sha256:
 a4c008d32730b5c21af5593c6987b3813d7a8d2ab3159946f71f791dec6c7d58 1863 switchsh_0~20070801-5.1.dsc
 b3963d4b2ad546f696572e2ccf18044fdbc6e82ac300af95baeb0b416f71c6a0 6656 switchsh_0~20070801-5.1.debian.tar.xz
Files:
 4667659c5f1c892c639afad30937ce70 1863 utils optional switchsh_0~20070801-5.1.dsc
 f95f8b17a7ff8e4f74cc7b54cc283e10 6656 utils optional switchsh_0~20070801-5.1.debian.tar.xz
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