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diff src/lex.ll @ 14510:c20de00a66a9

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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.
author Max Brister <max@2bass.com>
date Fri, 30 Mar 2012 13:46:57 -0400
parents 8d1ae996c122
children 5b0872b5b234
line wrap: on
line diff
--- a/src/lex.ll
+++ b/src/lex.ll
@@ -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.