Thread: pgsql: Fix pl/perl test case so it will still work under Perl 5.36.

Fix pl/perl test case so it will still work under Perl 5.36.

Perl 5.36 has reclassified the warning condition that this test
case used, so that the expected error fails to appear.  Tweak
the test so it instead exercises a case that's handled the same
way in all Perl versions of interest.

This appears to meet our standards for back-patching into
out-of-support branches: it changes no user-visible behavior
but enables testing of old branches with newer tools.
Hence, back-patch as far as 9.2.

Dagfinn Ilmari Mannsåker, per report from Jitka Plesníková.

Discussion: https://postgr.es/m/564579.1654093326@sss.pgh.pa.us

Branch
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REL9_4_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/b53780e1beebf496f2ee4f8b4ad2b51ac85efbcc

Modified Files
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src/pl/plperl/expected/plperl.out | 6 +++---
src/pl/plperl/sql/plperl.sql      | 4 ++--
2 files changed, 5 insertions(+), 5 deletions(-)