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kencc: make "function not declared" a warning unless compiling with -T

--- a/sys/src/cmd/cc/com.c

+++ b/sys/src/cmd/cc/com.c

@@ -608,9 +608,11 @@

 			goto bad;

 		n->type = l->type->link;

 		if(!debug['B']){

-			if(l->type->down == T)

+			if(l->type->down == T){

+				if(!debug['T'])

+					nerrors--;

 				diag(n, "function not declared: %F", l);

-			else if(l->type->down->etype == TOLD) {

+			}else if(l->type->down->etype == TOLD) {

 				nerrors--;

 				diag(n, "function args not checked: %F", l);

 			}

-- 

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