patch 8.0.1467: libvterm doesn't handle illegal byte sequence correctly commit https://github.com/vim/vim/commit/fef4ddd5eb8816a6607a624aa401bcfa71a63def Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 4 14:49:57 2018 +0100 patch 8.0.1467: libvterm doesn't handle illegal byte sequence correctly Problem: Libvterm doesn't handle illegal byte sequence correctly. Solution: After the invalid code check if there is space to store another character. Allocate one more character. (zhykzhykzhyk, closes #2614, closes #2613)

--- a/src/libvterm/src/encoding.c
+++ b/src/libvterm/src/encoding.c
@@ -46,14 +46,16 @@ static void decode_utf8(VTermEncoding *e
       return;
 
     else if(c >= 0x20 && c < 0x7f) {
-      if(data->bytes_remaining)
+      if(data->bytes_remaining) {
+        data->bytes_remaining = 0;
         cp[(*cpi)++] = UNICODE_INVALID;
-
+	if (*cpi >= cplen)
+	  break;
+      }
       cp[(*cpi)++] = c;
 #ifdef DEBUG_PRINT_UTF8
       printf(" UTF-8 char: U+%04x\n", c);
 #endif
-      data->bytes_remaining = 0;
     }
 
     else if(c == 0x7f) /* DEL */