add values to some "return" statements.

delete unused variables

R=ken
OCL=16360
CL=16360

diff --git a/src/cmd/gc/walk.c b/src/cmd/gc/walk.c
index d57dbe69d49ccf2e95dea31f68ea11dbd5971e93..1cd3c2003b6e74c536f6d03c8768fd219b1a4ec2 100644 (file)
--- a/src/cmd/gc/walk.c
+++ b/src/cmd/gc/walk.c
@@ -1088,7 +1088,7 @@ walkswitch(Node *sw, Type*(*call)(Node*, Type*))
        if(n->op == OLIST)
                n = n->left;
        if(n->op == OEMPTY)
-               return;
+               return T;
 
        for(; n!=N; n=n->right) {
                if(n->op != OCASE)
@@ -1156,7 +1156,6 @@ selcase(Node *n, Node *var)
 {
        Node *a, *r, *on, *c;
        Type *t;
-       Iter iter;
 
        c = n->left;
        if(c->op == ORECV)
@@ -1167,12 +1166,12 @@ selcase(Node *n, Node *var)
 
        t = fixchan(c->left->type);
        if(t == T)
-               return;
+               return N;
 
        convlit(c->right, t->type);
        if(!ascompat(t->type, c->right->type)) {
                badtype(c->op, t->type, c->right->type);
-               return;
+               return N;
        }
 
        // selectsend(sel *byte, hchan *chan any, elem any) (selected bool);
@@ -1197,7 +1196,7 @@ recv:
 
        t = fixchan(c->left->type);
        if(t == T)
-               return;
+               return N;
 
        // selectrecv(sel *byte, hchan *chan any, elem *any) (selected bool);
        on = syslook("selectrecv", 1);
@@ -1220,13 +1219,13 @@ recv2:
 
        t = fixchan(c->right->type);
        if(t == T)
-               return;
+               return N;
 
        walktype(c->left, Elv); // elem
        convlit(c->left, t->type);
        if(!ascompat(t->type, c->left->type)) {
                badtype(c->op, t->type, c->left->type);
-               return;
+               return N;
        }
 
        // selectrecv(sel *byte, hchan *chan any, elem *any) (selected bool);
@@ -1375,7 +1374,7 @@ walkselect(Node *sel)
 Type*
 lookdot(Node *n, Type *f)
 {
-       Type *r, *c;
+       Type *r;
        Sym *s;
 
        r = T;
@@ -1398,7 +1397,6 @@ lookdot(Node *n, Type *f)
 void
 walkdot(Node *n)
 {
-       Node *mn;
        Type *t, *f;
 
        if(n->left == N || n->right == N)
@@ -1607,7 +1605,6 @@ prcompat(Node *n)
        Type *t;
        Iter save;
        int w;
-       char *name;
 
        r = N;
        l = listfirst(&save, &n);
@@ -1736,8 +1733,6 @@ Node*
 stringop(Node *n, int top)
 {
        Node *r, *c, *on;
-       Type *t;
-       int32 l;
 
        switch(n->op) {
        default:
@@ -1886,7 +1881,7 @@ mapop(Node *n, int top)
        Node *r, *a;
        Type *t;
        Node *on;
-       int alg1, alg2, cl, cr;
+       int cl, cr;
 
 //dump("mapop", n);
 
@@ -2097,7 +2092,7 @@ chanop(Node *n, int top)
        Node *r, *a;
        Type *t;
        Node *on;
-       int alg, cl, cr;
+       int cl, cr;
 
 //dump("chanop", n);
 
@@ -2423,8 +2418,6 @@ int
 isandss(Type *lt, Node *r)
 {
        Type *rt;
-       Node *n;
-       int o;
 
        rt = r->type;
        if(isinter(lt)) {