@@ -1521,12 +1521,12 @@ check_collation_set(Oid collid)
15211521}
15221522}
15231523
1524- /* varstr_cmp()
1525- *Comparison function for text strings with given lengths.
1526- * Includes locale support, but must copy strings to temporary memory
1527- *to allow null-termination forinputs to strcoll().
1528- * Returns an integer less than, equal to, or greater than zero, indicating
1529- * whether arg1 is less than, equal to, or greater than arg2.
1524+ /*
1525+ *varstr_cmp()
1526+ *
1527+ * Comparison function fortext strings with given lengths, using the
1528+ *appropriate locale. Returns an integer less than, equal to, or greater than
1529+ *zero, indicating whether arg1 is less than, equal to, or greater than arg2.
15301530 *
15311531 * Note: many functions that depend on this are marked leakproof; therefore,
15321532 * avoid reporting the actual contents of the input when throwing errors.
@@ -1541,12 +1541,6 @@ varstr_cmp(const char *arg1, int len1, const char *arg2, int len2, Oid collid)
15411541
15421542check_collation_set (collid );
15431543
1544- /*
1545- * Unfortunately, there is no strncoll(), so in the non-C locale case we
1546- * have to do some memory copying. This turns out to be significantly
1547- * slower, so we optimize the case where LC_COLLATE is C. We also try to
1548- * optimize relatively-short strings by avoiding palloc/pfree overhead.
1549- */
15501544if (lc_collate_is_c (collid ))
15511545{
15521546result = memcmp (arg1 ,arg2 ,Min (len1 ,len2 ));