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This patch should fix the problem. Doesn't include my previous patch

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for repeat(). Again, somewhat off-the-cuff, so I might have missed
something...

test=# select lpad('xxxxx',1431655765,'yyyyyyyyyyyyyyyy');
ERROR:  Requested length too large
test=# select rpad('xxxxx',1431655765,'yyyyyyyyyyyyyyyy');
ERROR:  Requested length too large

(That's on a Unicode DB, haven't tested other encodings but AFAICT
this fix should still work.)

Neil Conway
This commit is contained in:
Bruce Momjian 2002-08-22 04:55:05 +00:00
parent cbe733d752
commit d86dee3edd
1 changed files with 11 additions and 1 deletions
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12
src/backend/utils/adt/oracle_compat.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/oracle_compat.c,v 1.39 2002/08/22 04:54:20 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/oracle_compat.c,v 1.40 2002/08/22 04:55:05 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -199,6 +199,11 @@ lpad(PG_FUNCTION_ARGS)
#ifdef MULTIBYTE
bytelen = pg_database_encoding_max_length() * len;
/* check for integer overflow */
if (len != 0 && bytelen / pg_database_encoding_max_length() != len)
elog(ERROR, "Requested length too large");
ret = (text *) palloc(VARHDRSZ + bytelen);
#else
ret = (text *) palloc(VARHDRSZ + len);
@ -310,6 +315,11 @@ rpad(PG_FUNCTION_ARGS)
#ifdef MULTIBYTE
bytelen = pg_database_encoding_max_length() * len;
/* Check for integer overflow */
if (len != 0 && bytelen / pg_database_encoding_max_length() != len)
elog(ERROR, "Requested length too large");
ret = (text *) palloc(VARHDRSZ + bytelen);
#else
ret = (text *) palloc(VARHDRSZ + len);