shithub: mc

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Track the closure of vars.

--- a/parse/stab.c

+++ b/parse/stab.c

@@ -72,7 +72,6 @@

     st->ns = mkht(namehash, nameeq);

     st->dcl = mkht(namehash, nameeq);

     st->ty = mkht(namehash, nameeq);

-    st->closure = mkht(namehash, nameeq);

     return st;

 }

@@ -80,9 +79,18 @@

 Sym *getdcl(Stab *st, Node *n)

 {

     Sym *s;

+    Stab *orig;

+

+    orig = st;

     do {

-        if ((s = htget(st->dcl, n)))

+        if ((s = htget(st->dcl, n))) {

+            /* record that this is in the closure of this scope */

+            if (!st->closure)

+                st->closure = mkht(namehash, nameeq);

+            if (st != orig)

+                htput(st->closure, s->name, s);

             return s;

+        }

         st = st->super;

     } while (st);

     return NULL;

@@ -145,4 +153,3 @@

         fatal(scope->name->line, "Ns %s already defined", name(s->name));

     htput(st->ns, scope->name, scope);

 }

-