From 84392bea7f6f0754f61d5b424129eb5fa809674d Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Sat, 26 May 2018 16:51:43 +0800
Subject: Codegen C - Don't emit destructor when type doesn't need it

---
 src/trans/codegen_c.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src')

diff --git a/src/trans/codegen_c.cpp b/src/trans/codegen_c.cpp
index 59687636..187485dc 100644
--- a/src/trans/codegen_c.cpp
+++ b/src/trans/codegen_c.cpp
@@ -4670,6 +4670,11 @@ namespace {
 
         void emit_destructor_call(const ::MIR::LValue& slot, const ::HIR::TypeRef& ty, bool unsized_valid, unsigned indent_level)
         {
+            // If the type doesn't need dropping, don't try.
+            if( !m_resolve.type_needs_drop_glue(sp, ty) )
+            {
+                return ;
+            }
             auto indent = RepeatLitStr { "\t", static_cast<int>(indent_level) };
             TU_MATCHA( (ty.m_data), (te),
             // Impossible
-- 
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