From 0a5dd940728ed9f94a74ddd92b394aabc23f20c9 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sun, 3 Aug 2014 12:20:30 +0300
Subject: [PATCH] Fixed whole program (link-time) optimization build with Clang

---
 src/g_level.h           | 2 +-
 src/thingdef/thingdef.h | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/g_level.h b/src/g_level.h
index 0cd366798b..ec867c2261 100644
--- a/src/g_level.h
+++ b/src/g_level.h
@@ -52,7 +52,7 @@ class FScanner;
 #define GCC_YSEG
 #else
 #define MSVC_YSEG
-#define GCC_YSEG __attribute__((section(SECTION_YREG)))
+#define GCC_YSEG __attribute__((section(SECTION_YREG))) __attribute__((used))
 #endif
 
 struct FIntermissionDescriptor;
diff --git a/src/thingdef/thingdef.h b/src/thingdef/thingdef.h
index c388a8544f..5225b787a9 100644
--- a/src/thingdef/thingdef.h
+++ b/src/thingdef/thingdef.h
@@ -266,11 +266,11 @@ enum EDefinitionType
 #define GCC_MSEG
 #else
 #define MSVC_ASEG
-#define GCC_ASEG __attribute__((section(SECTION_AREG)))
+#define GCC_ASEG __attribute__((section(SECTION_AREG))) __attribute__((used))
 #define MSVC_PSEG
-#define GCC_PSEG __attribute__((section(SECTION_GREG)))
+#define GCC_PSEG __attribute__((section(SECTION_GREG))) __attribute__((used))
 #define MSVC_MSEG
-#define GCC_MSEG __attribute__((section(SECTION_MREG)))
+#define GCC_MSEG __attribute__((section(SECTION_MREG))) __attribute__((used))
 #endif