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-rw-r--r--src/pl/plpgsql/src/pl_exec.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/src/pl/plpgsql/src/pl_exec.c b/src/pl/plpgsql/src/pl_exec.c
index bb99781c56e..d19425b7a71 100644
--- a/src/pl/plpgsql/src/pl_exec.c
+++ b/src/pl/plpgsql/src/pl_exec.c
@@ -5703,7 +5703,7 @@ exec_eval_expr(PLpgSQL_execstate *estate,
/*
* Else do it the hard way via exec_run_select
*/
- rc = exec_run_select(estate, expr, 2, NULL);
+ rc = exec_run_select(estate, expr, 0, NULL);
if (rc != SPI_OK_SELECT)
ereport(ERROR,
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
@@ -5757,6 +5757,10 @@ exec_eval_expr(PLpgSQL_execstate *estate,
/* ----------
* exec_run_select Execute a select query
+ *
+ * Note: passing maxtuples different from 0 ("return all tuples") is
+ * deprecated because it will prevent parallel execution of the query.
+ * However, we retain the parameter in case we need it someday.
* ----------
*/
static int
@@ -8606,6 +8610,15 @@ exec_set_found(PLpgSQL_execstate *estate, bool state)
PLpgSQL_var *var;
var = (PLpgSQL_var *) (estate->datums[estate->found_varno]);
+
+ /*
+ * Use pg_assume() to avoid a spurious warning with some compilers, by
+ * telling the compiler that the VARATT_IS_EXTERNAL_NON_EXPANDED() branch
+ * in assign_simple_var() will never be reached when called from here, due
+ * to "found" being a boolean (i.e. a byvalue type), not a varlena.
+ */
+ pg_assume(var->datatype->typlen != -1);
+
assign_simple_var(estate, var, BoolGetDatum(state), false, false);
}