The current upstream code probably suffers gcc 10 bug, which is:

gcc -o test-zeroconf test-zeroconf.c  -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64  -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -O2 -g -W -Wall -Werror -pthread  -D CONFIG_SANE_CONFIG_DIR=\"/etc/sane.d\"  -D_REENTRANT   -I/usr/include/libxml2   -I/usr/include/p11-kit-1     -I/usr/include/libpng16  -fPIC objs//libairscan.a -Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld   -lavahi-common -lavahi-client   -lxml2   -lgnutls  -lm -lpthread -fPIE  -ljpeg   -lpng16 -lz 
In function 'strcpy',
    inlined from 'trace_open' at airscan-trace.c:113:5:
/usr/include/bits/string_fortified.h:79:10: error: '__builtin_memcpy' writing 5 bytes into a region of size 0 overflows the destination [-Werror=stringop-overflow=]
   79 |   return __builtin___strcpy_chk (__dest, __src, __glibc_objsize (__dest));
      |          ^
lto1: all warnings being treated as errors
make[1]: *** [/tmp/ccKY9Ea3.mk:2: /tmp/cc3PrF2C.ltrans0.ltrans.o] Error 1
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.

The affected code:

110     path = str_append(path, ".log");
111     t->log = fopen(path, "w");
112 
113     strcpy(path + str_len(path) - 4, ".tar");   <---
114     t->data = fopen(path, "wb");

Reported upstream https://github.com/alexpevzner/sane-airscan/pull/140

Latest upstream release: 0.99.26
Current version/release in rawhide: 0.99.24-1.fc34
URL: https://github.com/alexpevzner/sane-airscan

Please consult the package updates policy before you issue an update to a stable branch: https://docs.fedoraproject.org/en-US/fesco/Updates_Policy/


More information about the service that created this bug can be found at: https://fedoraproject.org/wiki/Upstream_release_monitoring


Please keep in mind that with any upstream change, there may also be packaging changes that need to be made. Specifically, please remember that it is your responsibility to review the new version to ensure that the licensing is still correct and that no non-free or legally problematic items have been added upstream.


Based on the information from anitya: https://release-monitoring.org/project/121086/

FEDORA-2021-a6ce8c7a55 has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2021-a6ce8c7a55

FEDORA-2021-7c345a9193 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2021-7c345a9193

FEDORA-2021-b56f480c0a has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2021-b56f480c0a

FEDORA-2021-b56f480c0a has been pushed to the Fedora 32 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-b56f480c0a`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-b56f480c0a

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

FEDORA-2021-7c345a9193 has been pushed to the Fedora 33 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-7c345a9193`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-7c345a9193

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

FEDORA-2021-a6ce8c7a55 has been pushed to the Fedora 34 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-a6ce8c7a55`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-a6ce8c7a55

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

FEDORA-2021-a6ce8c7a55 has been pushed to the Fedora 34 stable repository.
If problem still persists, please make note of it in this bug report.

FEDORA-2021-7c345a9193 has been pushed to the Fedora 33 stable repository.
If problem still persists, please make note of it in this bug report.

FEDORA-2021-b56f480c0a has been pushed to the Fedora 32 stable repository.
If problem still persists, please make note of it in this bug report.