vim-patch:7.4.1054

Problem:    Illegal memory access.
Solution:   Check for missing pattern. (Dominique Pelle)

2795e21eaa

src/nvim/syntax.c

@@ -5004,6 +5004,10 @@ static void syn_cmd_sync(exarg_T *eap, int syncing)
         curwin->w_s->b_syn_sync_maxlines = 0;
       }
     } else if (STRCMP(key, "LINECONT") == 0)   {
+      if (*next_arg == NUL) {  // missing pattern
+        illegal = true;
+        break;
+      }
       if (curwin->w_s->b_syn_linecont_pat != NULL) {
         EMSG(_("E403: syntax sync: line continuations pattern specified twice"));
         finished = TRUE;

src/nvim/version.c

@@ -624,7 +624,7 @@ static int included_patches[] = {
   // 1057,
   // 1056,
   1055,
-  // 1054,
+  1054,
   // 1053,
   // 1052,
   // 1051,