From 04356c74e547612f5f467136e0aaa14fd2d33f10 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Thu, 3 Mar 2022 11:32:24 -0500
Subject: [PATCH] Use string type with -release compilation flag to avoid
 undefined reference to __assert

---
 Makefile      | 2 +-
 kernel_main.d | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 40fda66..03d6794 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 .PHONY: kernel
 kernel:
 	./i686-elf-gcc/bin/i686-elf-gcc -c -o boot.o -ffreestanding boot.S
-	ldc2 -march=x86 -mcpu=i686 --betterC -c -of=kernel_main.o kernel_main.d
+	ldc2 -march=x86 -mcpu=i686 --betterC -release -c -of=kernel_main.o kernel_main.d
 	./i686-elf-gcc/bin/i686-elf-gcc -o kernel.elf -ffreestanding -nostdlib -T link.ld boot.o kernel_main.o
 
 .PHONY: image
diff --git a/kernel_main.d b/kernel_main.d
index 30b1721..f75d7e6 100644
--- a/kernel_main.d
+++ b/kernel_main.d
@@ -2,7 +2,7 @@ extern (C) void mykernel_main() {
     write("Hello from D!");
 }
 
-void write(immutable(char) * message) {
+void write(string message) {
     ubyte * vidmem = cast(ubyte *) 0xB8000u;
     for (size_t i = 0u; message[i] != '\0'; i++) {
         vidmem[i * 2] = message[i];