* src/bytecode.c (exec_byte_code): Signal an error instead of aborting,

when encountering an unknown bytecode.

src/ChangeLog

+2012-09-24  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+	* bytecode.c (exec_byte_code): Signal an error instead of aborting,
+	when encountering an unknown bytecode.
+
 2012-09-24  Paul Eggert  <eggert@cs.ucla.edu>
 
 	image.c, indent.c: Use bool for booleans.

src/bytecode.c

@@ -1876,7 +1876,7 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
 	  /* Actually this is Bstack_ref with offset 0, but we use Bdup
 	     for that instead.  */
 	  /* CASE (Bstack_ref): */
-	  emacs_abort ();
+	  error ("Invalid byte opcode");
 
 	  /* Handy byte-codes for lexical binding.  */
 	CASE (Bstack_ref1):