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-rw-r--r--doc/src/sgml/libpq.sgml5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml
index 37ec3cb4e5f..74456aa69d7 100644
--- a/doc/src/sgml/libpq.sgml
+++ b/doc/src/sgml/libpq.sgml
@@ -3628,6 +3628,9 @@ char *PQresultErrorField(const PGresult *res, int fieldcode);
<synopsis>
void PQclear(PGresult *res);
</synopsis>
+
+ If the argument is a <symbol>NULL</symbol> pointer, no operation is
+ performed.
</para>
<para>
@@ -6670,6 +6673,8 @@ void PQfreemem(void *ptr);
<synopsis>
void PQconninfoFree(PQconninfoOption *connOptions);
</synopsis>
+ If the argument is a <symbol>NULL</symbol> pointer, no operation is
+ performed.
</para>
<para>