From 5736a9c6a9b357ab346dd8fcbe64f5d729d6d244 Mon Sep 17 00:00:00 2001
From: emekoi <emekankurumeh@outlook.com>
Date: Tue, 12 Feb 2019 10:21:45 -0600
Subject: removed hidden union tag in release modes

---
 src/analyze.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/analyze.cpp')

diff --git a/src/analyze.cpp b/src/analyze.cpp
index 12e245bd72..9941104bc4 100644
--- a/src/analyze.cpp
+++ b/src/analyze.cpp
@@ -2886,7 +2886,7 @@ static Error resolve_union_zero_bits(CodeGen *g, ZigType *union_type) {
     union_type->data.unionation.have_explicit_tag_type = decl_node->data.container_decl.auto_enum ||
         enum_type_node != nullptr;
     bool auto_layout = (union_type->data.unionation.layout == ContainerLayoutAuto);
-    bool want_safety = (field_count >= 2) && (auto_layout || enum_type_node != nullptr);
+    bool want_safety = (field_count >= 2) && (auto_layout || enum_type_node != nullptr) && !(g->build_mode == BuildModeFastRelease || g->build_mode == BuildModeSmallRelease);
     ZigType *tag_type;
     bool create_enum_type = decl_node->data.container_decl.auto_enum || (enum_type_node == nullptr && want_safety);
     bool *covered_enum_fields;
-- 
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