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authorTom Lane <tgl@sss.pgh.pa.us>2010-05-05 22:19:18 +0000
committerTom Lane <tgl@sss.pgh.pa.us>2010-05-05 22:19:18 +0000
commite7a03793d86e155664bad149f570da5d7743983a (patch)
tree51df5cc1dfde10767c6ce94f54a2d009549f9bf2 /src/tutorial/advanced.source
parent7bab4d17646ca3353b30e90c417cf3d38d1a9c83 (diff)
downloadpostgresql-e7a03793d86e155664bad149f570da5d7743983a.tar.gz
postgresql-e7a03793d86e155664bad149f570da5d7743983a.zip
Fix psql to not go into infinite recursion when expanding a variable that
refers to itself (directly or indirectly). Instead, print a message when recursion is detected, and don't expand the repeated reference. Per bug #5448 from Francis Markham. Back-patch to 8.0. Although the issue exists in 7.4 as well, it seems impractical to fix there because of the lack of any state stack that could be used to track active expansions.
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