From 03ccc6df704aae4ea19698f0167798013c14536e Mon Sep 17 00:00:00 2001
From: Yoichi Hirai <i@yoichihirai.com>
Date: Thu, 10 Nov 2016 11:33:15 +0100
Subject: codegen: truncate a boolean calldata down to one bit

---
 libsolidity/codegen/CompilerUtils.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'libsolidity')

diff --git a/libsolidity/codegen/CompilerUtils.cpp b/libsolidity/codegen/CompilerUtils.cpp
index d5361ac6..ff0f8b9c 100644
--- a/libsolidity/codegen/CompilerUtils.cpp
+++ b/libsolidity/codegen/CompilerUtils.cpp
@@ -925,6 +925,8 @@ unsigned CompilerUtils::loadFromMemoryHelper(Type const& _type, bool _fromCallda
 		if (leftAligned)
 			m_context << shiftFactor << Instruction::MUL;
 	}
+	if (_fromCalldata && _type.category() == Type::Category::Bool)
+		m_context << Instruction::ISZERO << Instruction::ISZERO;
 
 	return numBytes;
 }
-- 
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