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Add a crash gurard to pg_encoding_mblen in case of an invalid encoding

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Tatsuo Ishii
2001-04-19 02:34:35 +00:00
parent 23436bd530
commit b9be04e63d
1 changed files with 2 additions and 2 deletions
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4
src/backend/utils/mb/wchar.c
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@ -1,7 +1,7 @@
/* /*
* conversion functions between pg_wchar and multi-byte streams. * conversion functions between pg_wchar and multi-byte streams.
* Tatsuo Ishii * Tatsuo Ishii
* $Id: wchar.c,v 1.17 2001/03/22 04:00:05 momjian Exp $ * $Id: wchar.c,v 1.18 2001/04/19 02:34:35 ishii Exp $
* *
* WIN1250 client encoding updated by Pavel Behal * WIN1250 client encoding updated by Pavel Behal
* *
@ -502,5 +502,5 @@ pg_mic_mblen(const unsigned char *mbstr)
int int
pg_encoding_mblen(int encoding, const unsigned char *mbstr) pg_encoding_mblen(int encoding, const unsigned char *mbstr)
{ {
return ((*pg_wchar_table[encoding].mblen) (mbstr)); return( (encoding >= 0 && encoding < sizeof(pg_wchar_table)/sizeof(pg_wchar_tbl))? ((*pg_wchar_table[encoding].mblen) (mbstr)) : ((*pg_wchar_table[SQL_ASCII].mblen) (mbstr)));
} }