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-rw-r--r--src/backend/utils/mb/mbutils.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/src/backend/utils/mb/mbutils.c b/src/backend/utils/mb/mbutils.c
index 2e792b4f189..7f4a2f5fcf3 100644
--- a/src/backend/utils/mb/mbutils.c
+++ b/src/backend/utils/mb/mbutils.c
@@ -1057,11 +1057,16 @@ GetMessageEncoding(void)
WCHAR *
pgwin32_message_to_UTF16(const char *str, int len, int *utf16len)
{
+ int msgenc = GetMessageEncoding();
WCHAR *utf16;
int dstlen;
UINT codepage;
- codepage = pg_enc2name_tbl[GetMessageEncoding()].codepage;
+ if (msgenc == PG_SQL_ASCII)
+ /* No conversion is possible, and SQL_ASCII is never utf16. */
+ return NULL;
+
+ codepage = pg_enc2name_tbl[msgenc].codepage;
/*
* Use MultiByteToWideChar directly if there is a corresponding codepage,
@@ -1086,7 +1091,7 @@ pgwin32_message_to_UTF16(const char *str, int len, int *utf16len)
{
utf8 = (char *) pg_do_encoding_conversion((unsigned char *) str,
len,
- GetMessageEncoding(),
+ msgenc,
PG_UTF8);
if (utf8 != str)
len = strlen(utf8);