From 59de24817e8538434f35a20a401f40c2f0231a9a Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Thu, 14 Feb 2019 01:09:33 -0500
Subject: runtime safety check for casting null to pointer

see #1059
---
 src/analyze.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/analyze.cpp')

diff --git a/src/analyze.cpp b/src/analyze.cpp
index 900def52d4..6a8090a843 100644
--- a/src/analyze.cpp
+++ b/src/analyze.cpp
@@ -6902,3 +6902,12 @@ const char *container_string(ContainerKind kind) {
     }
     zig_unreachable();
 }
+
+bool ptr_allows_addr_zero(ZigType *ptr_type) {
+    if (ptr_type->id == ZigTypeIdPointer) {
+        return ptr_type->data.pointer.allow_zero;
+    } else if (ptr_type->id == ZigTypeIdOptional) {
+        return true;
+    }
+    return false;
+}
-- 
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