# HG changeset patch
# User Max Brister <max@2bass.com>
# Date 1333129617 14400
# Node ID c20de00a66a9c06b694f555636da2ec2dda77134
# Parent  a88f8e4fae568df6559fa66089b5767f680d9703
avoid memory error in 'octave --eval 0' (bug #36038)

* lex.ll (delete_buffer): Set yyin to 0 if no current buffer remains
after deleting buf.

diff -r a88f8e4fae56 -r c20de00a66a9 src/lex.ll
--- a/src/lex.ll	Thu Mar 29 19:13:21 2012 -0400
+++ b/src/lex.ll	Fri Mar 30 13:46:57 2012 -0400
@@ -1417,6 +1417,10 @@
 delete_buffer (YY_BUFFER_STATE buf)
 {
   yy_delete_buffer (buf);
+
+  // Prevent invalid yyin from being used by yyrestart.
+  if (! current_buffer ())
+    yyin = 0; 
 }
 
 // Delete all buffers from the stack.