fix dumb optional arg codegen

build/ultratiny.flx

@@ -86,20 +86,25 @@ class B : A
 
 // issue #0: we basically don't really even check for overriding methods properly.
 // issue #1: co/contra-variance of return and parameter types for virtual methods
-// issue #2: crashes when initialisers have default arguments??
+// issue #2: crashes when functions have default arguments??
 
 // classes are a Bad Idea (tm) ):
 
-struct Tmp
+class Tmp
 {
-	k: int
-	m: int
+	var z: int
 
-	fn meth() -> int => k * m
+	init(x: int = 3, y: int = 7)
+	{
+		this.z = x * y
+	}
 }
 
+
 @entry fn main()
 {
+	fn foo(x: int = 3, y: int = 7) -> int => x * y
+
 	// let a = B()
 	// let q = a.foo(Y(c: 1)).data
 
@@ -109,6 +114,8 @@ struct Tmp
 	// let q = Tmp(k: 3, m: 7).meth()
 
 	// let q = B().foo(Y(c: 1)).data
+
+	let q = foo(x: 7)
 	std::io::println("thing: %", q)
 }
 

source/codegen/call.cpp

@@ -125,7 +125,7 @@ static std::vector<fir::Value*> _codegenAndArrangeFunctionCallArguments(cgn::Cod
 		for(size_t i = 0; i < argExprs.size(); i++)
 		{
 			// this extra complexity is to ensure we codegen arguments from left-to-right!
-			auto arg = arguments[i].value;
+			auto arg = argExprs[i];
 			auto k = revArgExprs[arg];
 
 			auto infer = ft->getArgumentN(k);