Don't process surrogate pair chars

These are not valid UCS2 chars

diff --git a/src/util.c b/src/util.c
index 91116d0..e817730 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -765,6 +765,10 @@ char *sim_string_to_utf8(const unsigned char *buffer, int length)
 
                if (buffer[i] & 0x80) {
                        c = (buffer[i++] & 0x7f) + ucs2_offset;
+
+                       if (c >= 0xd800 && c < 0xe000)
+                               return NULL;
+
                        res_len += UTF8_LENGTH(c);
                        j += 1;
                        continue;