Horton

Fix segmentation fault in MergeInheritedAttribute()

Peter Eisentraut <peter@eisentraut.org>

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Commit: 8f0a97dfffc5b5f48f609fb894befcdf761dd576
Author: Peter Eisentraut <peter@eisentraut.org>
Date: 2024-05-03T09:10:40Z
Releases: 17.0 
Fix segmentation fault in MergeInheritedAttribute()

While converting a pg_attribute tuple into a ColumnDef,
ColumnDef::compression remains NULL if there is no compression method
set fot the attribute.  Calling strcmp() with NULL
ColumnDef::compression, when comparing compression methods of parents,
causes segmentation fault in MergeInheritedAttribute().  Skip
comparing compression methods if either of them is NULL.

Author: Ashutosh Bapat <ashutosh.bapat@enterprisedb.com>
Reported-by: Alexander Lakhin <exclusion@gmail.com>
Discussion: https://www.postgresql.org/message-id/b22a6834-aacb-7b18-0424-a3f5fe889667%40gmail.com

Files

PathChange+/−
src/backend/commands/tablecmds.c modified +10 −6
src/test/regress/expected/compression.out modified +7 −3
src/test/regress/sql/compression.sql modified +5 −3

Discussion