From 189e5a95569eb3d8ad9a602a77a4b1dae0645a4d Mon Sep 17 00:00:00 2001
From: Neta London <neta.london@gmail.com>
Date: Wed, 3 Jan 2024 13:06:48 +0200
Subject: [PATCH] Raise error when having multiple internal pins with the same
 name

---
 simulator/src/chip/builder.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/simulator/src/chip/builder.ts b/simulator/src/chip/builder.ts
index 8c14e4b5b..e93afefb9 100644
--- a/simulator/src/chip/builder.ts
+++ b/simulator/src/chip/builder.ts
@@ -157,6 +157,12 @@ export async function build(
               firstUse: rhs.span,
             });
           } else {
+            if (pinData.isDefined) {
+              return Err({
+                message: `Internal pin ${rhs.pin} already defined`,
+                span: rhs.span,
+              });
+            }
             pinData.isDefined = true;
           }
         }