From 663e665843627cead40258a74ffddf4574fbb816 Mon Sep 17 00:00:00 2001
From: LemonBoy <thatlemon@gmail.com>
Date: Wed, 18 Sep 2019 08:54:59 +0200
Subject: Prevent crash with invalid extern type

Fixes #3240
---
 src/analyze.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/analyze.cpp')

diff --git a/src/analyze.cpp b/src/analyze.cpp
index f46abe5e52..5a3551a7c2 100644
--- a/src/analyze.cpp
+++ b/src/analyze.cpp
@@ -1606,6 +1606,10 @@ Error type_allowed_in_extern(CodeGen *g, ZigType *type_entry, bool *result) {
                 *result = false;
                 return ErrorNone;
             }
+            if (!type_is_nonnull_ptr(child_type)) {
+                *result = false;
+                return ErrorNone;
+            }
             return type_allowed_in_extern(g, child_type, result);
         }
         case ZigTypeIdEnum:
-- 
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