Hint not working for Prepare Statement

[ZaidGolwalaFAST]

I am trying to use pg_hint_plan to get hint for my dynamic queries prepared using Prepare statements , but hint does not work.

I have attached the test case for ECPG for which pg_hint_plan fails to provide hint.
From the log it seems the sequence in which it parses the query and execute the query gets jumbled up.

I have attached the log and Source code with my logging for same , for debugging purpose I had added logging in functions "pg_hint_plan_post_parse_analyze" and "pg_hint_plan_planner".

It seems that while executing pg_hint_plan_planner the hint gets overwritten with next statement's hint string.

test_douteki_01.pgc.txt

hint_plan.log

pg_hint_plan.c.txt

[horiguti]

I think this is introduced at PG10 version and fixed by the commit 0576a94 for master, PG12, 4e3c987
for PG11 , eb2d8f3
for PG10.