1 files changed, 11 insertions, 12 deletions

diff --git a/src/bytecode.c b/src/bytecode.c
index 3267c7c8c76..7676c8550a4 100644
--- a/src/bytecode.c
+++ b/src/bytecode.c
@@ -1,5 +1,6 @@
 /* Execution of byte code produced by bytecomp.el.
-   Copyright (C) 1985-1988, 1993, 2000-2012 Free Software Foundation, Inc.
+   Copyright (C) 1985-1988, 1993, 2000-2013 Free Software Foundation,
+   Inc.
 
 This file is part of GNU Emacs.
 
@@ -87,8 +88,6 @@ Lisp_Object Qbyte_code_meter;
 #endif /* BYTE_CODE_METER */
 
 
-Lisp_Object Qbytecode;
-
 /*  Byte codes: */
 
 #define BYTE_CODES                                                      \
@@ -314,9 +313,11 @@ struct byte_stack
   Lisp_Object byte_string;
   const unsigned char *byte_string_start;
 
+#if BYTE_MARK_STACK
   /* The vector of constants used during byte-code execution.  Storing
      this here protects it from GC because mark_byte_stack marks it.  */
   Lisp_Object constants;
+#endif
 
   /* Next entry in byte_stack_list.  */
   struct byte_stack *next;
@@ -380,12 +381,12 @@ unmark_byte_stack (void)
 }
 
 
-/* Fetch the next byte from the bytecode stream */
+/* Fetch the next byte from the bytecode stream.  */
 
 #define FETCH *stack.pc++
 
 /* Fetch two bytes from the bytecode stream and make a 16-bit number
-   out of them */
+   out of them.  */
 
 #define FETCH2 (op = FETCH, op + (FETCH << 8))
 
@@ -405,7 +406,7 @@ unmark_byte_stack (void)
 #define DISCARD(n) (top -= (n))
 
 /* Get the value which is at the top of the execution stack, but don't
-   pop it. */
+   pop it.  */
 
 #define TOP (*top)
 
@@ -536,7 +537,9 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
 
   stack.byte_string = bytestr;
   stack.pc = stack.byte_string_start = SDATA (bytestr);
+#if BYTE_MARK_STACK
   stack.constants = vector;
+#endif
   if (MAX_ALLOCA / word_size <= XFASTINT (maxdepth))
     memory_full (SIZE_MAX);
   top = alloca ((XFASTINT (maxdepth) + 1) * sizeof *top);
@@ -657,7 +660,7 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
          the table clearer.  */
 #define LABEL(OP) [OP] = &&insn_ ## OP
 
-#if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
 # pragma GCC diagnostic push
 # pragma GCC diagnostic ignored "-Woverride-init"
 #endif
@@ -673,7 +676,7 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
 #undef DEFINE
         };
 
-#if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
 # pragma GCC diagnostic pop
 #endif
 
@@ -752,7 +755,6 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
               {
                 BEFORE_POTENTIAL_GC ();
                 wrong_type_argument (Qlistp, v1);
-                AFTER_POTENTIAL_GC ();
               }
             NEXT;
           }
@@ -787,7 +789,6 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
               {
                 BEFORE_POTENTIAL_GC ();
                 wrong_type_argument (Qlistp, v1);
-                AFTER_POTENTIAL_GC ();
               }
             NEXT;
           }
@@ -1963,8 +1964,6 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
 void
 syms_of_bytecode (void)
 {
-  DEFSYM (Qbytecode, "byte-code");
-
   defsubr (&Sbyte_code);
 
 #ifdef BYTE_CODE_METER