Horton

Don't rely on uninitialized value in MERGE / DELETE

Alvaro Herrera <alvherre@alvh.no-ip.org>

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Commit: 5d8ec1b9f625be800c8db93408e7c0553356fcd3
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: 2023-02-15T19:37:44Z
Releases: 15.3 
Don't rely on uninitialized value in MERGE / DELETE

On MERGE / WHEN MATCHED DELETE it's not possible to get cross-partition
updates, so we don't initialize cpUpdateRetrySlot; however, the code was
not careful to ignore the value in that case.  Make it do so.

Backpatch to 15.

Reported-by: Alexander Lakhin <exclusion@gmail.com>
Reviewed-by: Dean Rasheed <dean.a.rasheed@gmail.com>
Discussion: https://postgr.es/m/17792-0f89452029662c36@postgresql.org

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PathChange+/−
src/backend/executor/nodeModifyTable.c modified +7 −8

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