From 8da1a5bc1751da7ed35d5c129bbf055b68477c47 Mon Sep 17 00:00:00 2001
From: Ayke van Laethem <aykevanlaethem@gmail.com>
Date: Sat, 3 Nov 2018 12:04:33 +0100
Subject: [PATCH] compiler: add comment to interface call signatures

---
 compiler/compiler.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/compiler/compiler.go b/compiler/compiler.go
index 915398d2..1e25ef32 100644
--- a/compiler/compiler.go
+++ b/compiler/compiler.go
@@ -694,6 +694,8 @@ func (c *Compiler) getLLVMType(goType types.Type) (llvm.Type, error) {
 				return llvm.Type{}, err
 			}
 			if recv.StructName() == "runtime._interface" {
+				// This is a call on an interface, not a concrete type.
+				// The receiver is not an interface, but a i8* type.
 				recv = c.i8ptrType
 			}
 			paramTypes = append(paramTypes, c.expandFormalParamType(recv)...)