#define MAYBE_GC() \
if (consing_since_gc > gc_cons_threshold) \
- Fgarbage_collect ();
+ { \
+ Fgarbage_collect (); \
+ HANDLE_RELOCATION (); \
+ } \
+ else
+
+/* Relocate BYTESTR if there has been a GC recently. */
+#define HANDLE_RELOCATION() \
+ if (! EQ (string_saved, bytestr)) \
+ { \
+ pc = pc - XSTRING (string_saved)->data + XSTRING (bytestr)->data; \
+ string_saved = bytestr; \
+ } \
+ else
+
+/* Check for jumping out of range. */
+#define CHECK_RANGE(ARG) \
+ if (ARG >= bytestr_length) abort ()
DEFUN ("byte-code", Fbyte_code, Sbyte_code, 3, 3, 0,
"Function used internally in byte-compiled code.\n\
/* Cached address of beginning of string,
valid if BYTESTR equals STRING_SAVED. */
register unsigned char *strbeg;
+ int bytestr_length = XSTRING (bytestr)->size;
CHECK_STRING (bytestr, 0);
if (!VECTORP (vector))
pc - XSTRING (string_saved)->data);
#endif
- if (! EQ (string_saved, bytestr))
- {
- pc = pc - XSTRING (string_saved)->data + XSTRING (bytestr)->data;
- string_saved = bytestr;
- }
+ /* Update BYTESTR if we had a garbage collection. */
+ HANDLE_RELOCATION ();
#ifdef BYTE_CODE_METER
prev_op = this_op;
MAYBE_GC ();
QUIT;
op = FETCH2; /* pc = FETCH2 loses since FETCH2 contains pc++ */
+ CHECK_RANGE (op);
pc = XSTRING (string_saved)->data + op;
break;
if (NILP (POP))
{
QUIT;
+ CHECK_RANGE (op);
pc = XSTRING (string_saved)->data + op;
}
break;
if (!NILP (POP))
{
QUIT;
+ CHECK_RANGE (op);
pc = XSTRING (string_saved)->data + op;
}
break;
if (NILP (TOP))
{
QUIT;
+ CHECK_RANGE (op);
pc = XSTRING (string_saved)->data + op;
}
else DISCARD (1);
if (!NILP (TOP))
{
QUIT;
+ CHECK_RANGE (op);
pc = XSTRING (string_saved)->data + op;
}
else DISCARD (1);