Use correct length to convert json unicode escapes.

Bug reported on IRC - fix due to Andrew Gierth.

diff --git a/src/backend/utils/adt/json.c b/src/backend/utils/adt/json.c
index 90404f34effd1988ac66a186a8d8a09b8d1ae1bc..507c91ff97b2fd30269c1d4a450e7b72e2cf0e07 100644 (file)
--- a/src/backend/utils/adt/json.c
+++ b/src/backend/utils/adt/json.c
@@ -721,7 +721,7 @@ json_lex_string(JsonLexContext *lex)
                                        unicode_to_utf8(ch, (unsigned char *) utf8str);
                                        utf8len = pg_utf_mblen((unsigned char *) utf8str);
                                        utf8str[utf8len] = '\0';
-                                       converted = pg_any_to_server(utf8str, 1, PG_UTF8);
+                                       converted = pg_any_to_server(utf8str, utf8len, PG_UTF8);
                                        appendStringInfoString(lex->strval, converted);
                                        if (converted != utf8str)
                                                pfree(converted);