gc: remove funarg special case in structfield
This should make CL 5431046 a little simpler.
R=ken2
CC=golang-dev
https://golang.org/cl/5444048
diff --git a/src/cmd/gc/typecheck.c b/src/cmd/gc/typecheck.c
index 2ec3c72..d950135 100644
--- a/src/cmd/gc/typecheck.c
+++ b/src/cmd/gc/typecheck.c
@@ -2465,6 +2465,7 @@
domethod(Node *n)
{
Node *nt;
+ Type *t;
nt = n->type->nname;
typecheck(&nt, Etype);
@@ -2474,6 +2475,20 @@
n->type->nod = N;
return;
}
+
+ // If we have
+ // type I interface {
+ // M(_ int)
+ // }
+ // then even though I.M looks like it doesn't care about the
+ // value of its argument, a specific implementation of I may
+ // care. The _ would suppress the assignment to that argument
+ // while generating a call, so remove it.
+ for(t=getinargx(nt->type)->type; t; t=t->down) {
+ if(t->sym != nil && strcmp(t->sym->name, "_") == 0)
+ t->sym = nil;
+ }
+
*n->type = *nt->type;
n->type->nod = N;
checkwidth(n->type);
