Created attachment 1815270 [details] reproducer (sets up and runs C code) krb5 uses resolv_wrapper for testing our DNS discovery. I've simplified the test into a reproducer that doesn't rely on any krb5 code, just resolv_wrapper and system libraries. For clarity, a failing run produces "res_nsearch failed: -1" while a successful run produces "Success with length 701". Working on fc34: glibc-2.33-20.fc34.x86_64 resolv_wrapper-1.1.7-1.fc34.x86_64 Broken on rawhide: glibc-2.34-1.fc35.x86_64 resolv_wrapper-1.1.7-2.fc35.x86_64 (My reproducer is attached. It needs a C compiler and resolv_wrapper installed to work.)
As a first step I implemented a new test in resolv_wrapper: https://gitlab.com/cwrap/resolv_wrapper/-/merge_requests/7
Strange, the test I added works on rawhide, but another test fails now: https://kojipkgs.fedoraproject.org//work/tasks/6879/74136879/build.log
podman run --network=host -ti registry.fedoraproject.org/fedora:rawhide /bin/bash [root@krikkit ~]# rpm -q resolv_wrapper resolv_wrapper-1.1.7-2.fc35.x86_64 [root@krikkit ~]# bash driver.sh res_nsearch failed: -1 cd /resolv_wrapper/obj/ [root@krikkit obj]# make install ... [root@krikkit ~]# bash driver.sh Success with length 701 I guess resolv_wrapper just need to be recompiled against a newer glibc version.
The problem is another test is failing, so the rebuild needs to wait till I have found that issue ...
This bug appears to have been reported against 'rawhide' during the Fedora 36 development cycle. Changing version to 36.
Does this bug still exist? How can I reproduce it?
The test I wrote works just fine: https://gitlab.com/cwrap/resolv_wrapper/-/commit/9172ea46b69655603e8db97fc6f1cdffdde03da0
I think that, in krb5's case, you fixed it with https://src.fedoraproject.org/rpms/krb5/pull-request/18
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