Fix bug #18982 with assertion violations when reverting buffers.

 src/fileio.c (Finsert_file_contents): Invalidate buffer caches also
 when the inserted text does not need decoding.

2 files changed, 8 insertions, 2 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index c03218c21f9..719ccec467d 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,8 @@
 2014-11-09  Eli Zaretskii  <eliz@gnu.org>
 
+        * fileio.c (Finsert_file_contents): Invalidate buffer caches also
+        when the inserted text does not need decoding.  (Bug#18982)
+
         * w32heap.c (allocate_heap): Set the lower limit of heap at 8MB.
         (Bug#18995)
 
diff --git a/src/fileio.c b/src/fileio.c
index fba64010b54..8570a1604a3 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -4308,8 +4308,11 @@ by calling `format-decode', which see.  */)
       coding_system = CODING_ID_NAME (coding.id);
     }
   else if (inserted > 0)
-    adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted,
-                         inserted);
+    {
+      invalidate_buffer_caches (current_buffer, PT, PT + inserted);
+      adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted,
+                           inserted);
+    }
 
   /* Call after-change hooks for the inserted text, aside from the case
      of normal visiting (not with REPLACE), which is done in a new buffer