bootstrappable: constant pointer arithmetic.

tcc.c

@@ -251,6 +251,10 @@ int main(int argc, char **argv)
     unsigned start_time = 0;
     const char *first_file;
 
+#if BOOTSTRAP //MESC bug
+    vstack = &__vstack[1];
+#endif
+
 redo:
     s = tcc_new();
     opt = tcc_parse_args(s, &argc, &argv, 1);

tcc.h

@@ -1313,7 +1313,15 @@ ST_DATA CType char_pointer_type, func_old_type, int_type, size_type;
 ST_DATA SValue __vstack[1+/*to make bcheck happy*/VSTACK_SIZE];
 ST_DATA SValue *vtop;
 ST_DATA SValue *pvtop;
-#define vstack  (__vstack + 1)
+#if BOOTSTRAP
+#if __MESC__
+SValue *vstack;
+#else
+extern SValue *vstack;
+#endif
+#else
+#define vstack (__vstack + 1)
+#endif
 ST_DATA int rsym, anon_sym, ind, loc;
 
 ST_DATA int const_wanted; /* true if constant wanted */

tccgen.c

@@ -28,6 +28,9 @@
    rsym: return symbol
    anon_sym: anonymous symbol index
 */
+#if BOOTSTRAP //MESC
+SValue *vstack;
+#endif
 ST_DATA int rsym, anon_sym, ind, loc;
 
 ST_DATA Sym *sym_free_first;