[Emacs-diffs] Changes to emacs/src/lread.c

[Richard M. Stallman]

Index: emacs/src/lread.c
diff -u emacs/src/lread.c:1.350 emacs/src/lread.c:1.351
--- emacs/src/lread.c:1.350     Mon Feb 27 02:04:35 2006
+++ emacs/src/lread.c   Fri May 12 02:08:16 2006
@@ -1340,7 +1340,9 @@
 /* UNIBYTE specifies how to set load_convert_to_unibyte
    for this invocation.
    READFUN, if non-nil, is used instead of `read'.
-   START, END is region in current buffer (from eval-region).  */
+
+   START, END specify region to read in current buffer (from eval-region).
+   If the input is not from a buffer, they must be nil.  */
 
 static void
 readevalloop (readcharfun, stream, sourcename, evalfun,
@@ -1376,6 +1378,10 @@
   else if (MARKERP (readcharfun))
     b = XMARKER (readcharfun)->buffer;
 
+  /* We assume START is nil when input is not from a buffer.  */
+  if (! NILP (start) && !b)
+    abort ();
+
   specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun.  */
   specbind (Qcurrent_load_list, Qnil);
   record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil);