bug#45772: [core-updates] Non-deterministic GNU awk test failure

[Maxim Cournoyer]

Seen trying to rebuild the world on core-updates, with gawk-5.1.0:

--8<---------------cut here---------------start------------->8---
for i in _* ; \
do  \
        if [ "$i" != "_*" ]; then \
        echo ============== $i ============= ; \
        base=`echo $i | sed 's/^_//'` ; \
        if [ -r ${base}.ok ]; then \
        diff -c ${base}.ok $i ; \
        else \
        diff -c "."/${base}.ok  $i ; \
        fi ; \
        fi ; \
done 
============== _sigpipe1 =============
*** sigpipe1.ok Wed Aug 28 18:43:58 2019
--- _sigpipe1   Sun Jan 10 19:08:15 2021
***************
*** 1,3 ****
  system
  pipe to command
! pipe from command
--- 1,4 ----
  system
  pipe to command
! gawk: sigpipe1.awk:7: fatal: print to "yes | true" failed: Broken pipe
! EXIT CODE: 2

Re-running later
--8<---------------cut here---------------end--------------->8---

On a second attempt the same test passed.

Maxim