Tom,
I can still trigger the old bug for which we thought we'd pushed a fix. The test case below crashes on master
(e12694523e7e4482a052236f12d3d8b58be9a22c),and also on the fixed version "Make regexp engine's backref-related
compilationstate more bulletproof." (cb76fbd7ec87e44b3c53165d68dc2747f7e26a9a).
Can you test if it crashes for you, too? I'm not sure I see why this one fails when millions of others pass.
The backtrace is still complaining about regc_nfa.c:1265:
+select regexp_split_to_array('', '(?:((?:q+))){0}(\1){0,0}?*[^]');
+server closed the connection unexpectedly
+ This probably means the server terminated abnormally
+ before or while processing the request.
+connection to server was lost
—
Mark Dilger
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company