Segfault in gsasl tests after krb5 update

[Vladimír Čunát]

Hello,

after update of krb5 (1.17 -> 1.18), we're running into problems with
gsasl tests.  Any idea what's the matter?  I know almost nothing around
gsasl.

With 1.8.0 we started getting a segfault with 100% reproducibility:

/nix/store/8gy2bmpz3qawxr3g8hqhfgkf32wb0wfl-bash-4.4-p23/bin/bash: line
5: 28806 Segmentation fault      (core dumped) SHISHI_KEYS=./gssapi.key
SHISHI_TICKETS=./gssapi.tkt SHISHI_CONFIG=./shishi.conf SHISHI_HOME=.
SHISHI_USER=ignore-this-warning THREADSAFETY_FILES=`ls ../lib/*/*.c |
/nix/store/8z2qcxbl9kfqhqqjm04lzlvvlwli4bw7-gnugrep-3.4/bin/grep -v -e
lib/gl/vasnprintf.c -e lib/gl/getdelim.c` MD5FILE=./cram-md5.pwd
EGREP="/nix/store/8z2qcxbl9kfqhqqjm04lzlvvlwli4bw7-gnugrep-3.4/bin/grep
-E" GNUGSS=`if grep 'HAVE_LIBGSS 1' ../lib/config.h > /dev/null; then
echo yes; else echo no; fi` ${dir}$tst

I tried with 1.8.1, but it failed as well, probably in the same way
(output formatting has changed in the meantime).

../lib/build-aux/test-driver: line 107:  1484 Segmentation fault     
(core dumped) "$@" > $log_file 2>&1

You can inspect one full log e.g. on
https://nix-cache.s3.amazonaws.com/log/1g2hw0dwa8vapqrb9wcsj8kjiid0sbwj-gsasl-1.8.0.drv
Cross-link downstream:
https://github.com/NixOS/nixpkgs/pull/80599#issuecomment-593506082

Thanks
--Vladimir