From 8503eff8c12697c35ab5c73d6651c4b996339706 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Sun, 22 Apr 2018 23:46:55 -0400
Subject: add compile error for invalid deref on switch target

closes #945
---
 src/ir.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/ir.cpp')

diff --git a/src/ir.cpp b/src/ir.cpp
index 865a6823be..cd00fc6230 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -14782,7 +14782,10 @@ static TypeTableEntry *ir_analyze_instruction_switch_target(IrAnalyze *ira,
         return out_val->type;
     }
 
-    assert(target_value_ptr->value.type->id == TypeTableEntryIdPointer);
+    if (target_value_ptr->value.type->id != TypeTableEntryIdPointer) {
+        ir_add_error(ira, target_value_ptr, buf_sprintf("invalid deref on switch target"));
+        return ira->codegen->builtin_types.entry_invalid;
+    }
 
     TypeTableEntry *target_type = target_value_ptr->value.type->data.pointer.child_type;
     ConstExprValue *pointee_val = nullptr;
-- 
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