From 3bac960ff8c0efb1a1dd7a3c2c911f57bb87a85b Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sat, 22 Jul 2023 15:26:51 +0100
Subject: Check operand exists for Patio local

---
 .../java/org/shedlang/compiler/backends/llvm/LlvmPatioCodeGen.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src/main/java')

diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/LlvmPatioCodeGen.java b/src/main/java/org/shedlang/compiler/backends/llvm/LlvmPatioCodeGen.java
index bbf7bb41..3dd4dcc7 100644
--- a/src/main/java/org/shedlang/compiler/backends/llvm/LlvmPatioCodeGen.java
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/LlvmPatioCodeGen.java
@@ -782,7 +782,12 @@ public class LlvmPatioCodeGen {
         }
 
         public LlvmOperand patioLocalToOperand(PatioLocalRef value) {
-            return this.patioLocalToOperand.get(value);
+            var operand = this.patioLocalToOperand.get(value);
+            if (operand == null) {
+                throw new RuntimeException("no operand for Patio local: " + value.name());
+            } else {
+                return operand;
+            }
         }
 
         public FunctionContext addPatioLocalToType(PatioLocalRef patioLocal, LlvmType llvmType) {
-- 
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