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Fix obsolete comments in varstr_cmp().

This commit is contained in:
Jeff Davis 2024-08-21 09:19:21 -07:00
parent 86488cdf12
commit a839567784
1 changed files with 6 additions and 12 deletions
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18
src/backend/utils/adt/varlena.c
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@ -1521,12 +1521,12 @@ check_collation_set(Oid collid)
}
}
/* varstr_cmp()
* Comparison function for text strings with given lengths.
* Includes locale support, but must copy strings to temporary memory
* to allow null-termination for inputs to strcoll().
* Returns an integer less than, equal to, or greater than zero, indicating
* whether arg1 is less than, equal to, or greater than arg2.
/*
* varstr_cmp()
*
* Comparison function for text strings with given lengths, using the
* appropriate locale. Returns an integer less than, equal to, or greater than
* zero, indicating whether arg1 is less than, equal to, or greater than arg2.
*
* Note: many functions that depend on this are marked leakproof; therefore,
* 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)
check_collation_set(collid);
/*
* Unfortunately, there is no strncoll(), so in the non-C locale case we
* have to do some memory copying. This turns out to be significantly
* slower, so we optimize the case where LC_COLLATE is C. We also try to
* optimize relatively-short strings by avoiding palloc/pfree overhead.
*/
if (lc_collate_is_c(collid))
{
result = memcmp(arg1, arg2, Min(len1, len2));