From 4c1e03ebff97ad41889a2067eedba121bc526c64 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Mon, 10 Apr 2017 22:20:34 +0300
Subject: [PATCH] Fixed alignment issue with GCC/Clang i386 build

---
 src/dobjtype.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/dobjtype.cpp b/src/dobjtype.cpp
index f681def3e..b4fd9835d 100644
--- a/src/dobjtype.cpp
+++ b/src/dobjtype.cpp
@@ -780,6 +780,15 @@ PFloat::PFloat(unsigned int size)
 	mDescriptiveName.Format("Float%d", size);
 	if (size == 8)
 	{
+#ifdef __i386__
+		// According to System V i386 ABI alignment of double type is 4
+		// GCC and Clang for 32-bit Intel targets follow this requirement
+		// However GCC has -malign-double option to enable 8-byte alignment
+		// So calculation of the actual alignment is needed
+		struct AlignmentCheck { uint8_t i; double d; };
+		Align = static_cast<unsigned int>(offsetof(AlignmentCheck, d));
+#endif // __i386__
+
 		SetDoubleSymbols();
 	}
 	else