From ec878114208b62dd14c8f6bc5e15a1217d7b6293 Mon Sep 17 00:00:00 2001
From: Ayke van Laethem <aykevanlaethem@gmail.com>
Date: Thu, 6 Jun 2019 12:07:59 +0200
Subject: [PATCH] compiler: do not panic on duplicate functions

Instead, show a regular error message. This is much more user-friendly.
---
 compiler/compiler.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/compiler.go b/compiler/compiler.go
index 8b430083..3a588b98 100644
--- a/compiler/compiler.go
+++ b/compiler/compiler.go
@@ -826,7 +826,8 @@ func (c *Compiler) parseFunc(frame *Frame) {
 		fmt.Printf("\nfunc %s:\n", frame.fn.Function)
 	}
 	if !frame.fn.LLVMFn.IsDeclaration() {
-		panic("function is already defined: " + frame.fn.LLVMFn.Name())
+		c.addError(frame.fn.Pos(), "function is already defined:"+frame.fn.LLVMFn.Name())
+		return
 	}
 	if !frame.fn.IsExported() {
 		frame.fn.LLVMFn.SetLinkage(llvm.InternalLinkage)