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Commit5b0e7fe

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Fix use-after-free with multirange types in CREATE TYPE
The code was freeing the name of the multirange type function stored inthe parse tree but it should not do that. Event triggers could forexample look at such a corrupted parsed tree with a ddl_command_endevent.Author: Alex Kozhemyakin, Sergey ShinderukReviewed-by: Peter Eisentraut, Michael PaquierDiscussion:https://postgr.es/m/d5042d46-b9cd-6efb-219a-71ed0cf45bc8@postgrespro.ruBackpatch-through: 14
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‎src/backend/commands/typecmds.c

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Original file line numberDiff line numberDiff line change
@@ -1707,7 +1707,6 @@ DefineRange(ParseState *pstate, CreateRangeStmt *stmt)
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/* Create cast from the range type to its multirange type */
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CastCreate(typoid,multirangeOid,castFuncOid,'e','f',DEPENDENCY_INTERNAL);
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pfree(multirangeTypeName);
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pfree(multirangeArrayName);
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returnaddress;

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