(skip_chars): Update syntax-table only after we checked that

the new location is valid.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/syntax.c b/src/syntax.c
index a9e6dda81fe..acb5d37825c 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -1669,10 +1669,10 @@ skip_chars (forwardp, syntaxp, string, lim, handle_iso_classes)
                       p = GPT_ADDR;
                       stop = endp;
                     }
+                  UPDATE_SYNTAX_TABLE_BACKWARD (pos - 1);
                   if (! fastmap[(int) SYNTAX (p[-1])])
                     break;
                   p--, pos--;
-                  UPDATE_SYNTAX_TABLE_BACKWARD (pos - 1);
                 }
           }
       }