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Fix UBSAN failure: sql_select.h:982:7: load of value ... not valid for type bool

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This is 11.0 part of the fix: in 11.0, get_costs_for_tables() calls
best_access_path() for all possible tables, for each call it saves
a POSITION object with the access method and "loose_scan_pos"
POSITION object.
The latter is saved even if there is no possible LooseScan plan. Saving
is done by copying POSITION objects which may generate a spurious
UBSan error.
This commit is contained in:
Sergei Petrunia
2023-05-16 11:04:48 +03:00
committed by Sergei Golubchik
parent aac88fc205
commit 7083e58e2e
1 changed files with 1 additions and 0 deletions
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sql/sql_select.cc
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@@ -449,6 +449,7 @@ POSITION::POSITION()
key= 0; key= 0;
forced_index= 0; forced_index= 0;
use_join_buffer= 0; use_join_buffer= 0;
firstmatch_with_join_buf= false;
sj_strategy= SJ_OPT_NONE; sj_strategy= SJ_OPT_NONE;
n_sj_tables= 0; n_sj_tables= 0;
spl_plan= 0; spl_plan= 0;