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insert ODCL in type switch case.

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needed for heap allocation if variable escapes.

package main
func main(){
	var i interface{} = 42;
	switch v := i.(type) {
	case int:
		println(&v, v);
	}
}

R=ken
OCL=31245
CL=31245
This commit is contained in:
Russ Cox 2009-07-06 23:42:57 -07:00
parent 0aa1b1508a
commit 0417aafe75
1 changed files with 4 additions and 2 deletions
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6
src/cmd/gc/swt.c
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@ -680,9 +680,11 @@ static Node* boolname;
Node*
typeone(Node *t)
{
Node *a, *b;
Node *a, *b, *dcl;
a = t->left->left; // var
dcl = nod(ODCL, a, N);
a = nod(OLIST, a, boolname); // var,bool
b = nod(ODOTTYPE, facename, N);
@ -693,7 +695,7 @@ typeone(Node *t)
b = nod(OIF, N, N);
b->ntest = boolname;
b->nbody = t->right; // if bool { goto l }
return list(a, b);
return list(list(dcl, a), b);
}
Node*