From 565b9633ee68b311c1a954022869d9e99fee7286 Mon Sep 17 00:00:00 2001
From: serge-sans-paille <sguelton@redhat.com>
Date: Fri, 1 Feb 2019 06:39:13 +0000
Subject: [PATCH] Fix uninitialized value in ABIArgInfo

GCC-9 takes advantage of this uninitialized values to optimize stuff,
which ends up in failing validation when compiling clang.
---
 include/clang/CodeGen/CGFunctionInfo.h | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/include/clang/CodeGen/CGFunctionInfo.h b/include/clang/CodeGen/CGFunctionInfo.h
index cf64e9f3ee..131eb38393 100644
--- a/include/clang/CodeGen/CGFunctionInfo.h
+++ b/include/clang/CodeGen/CGFunctionInfo.h
@@ -112,14 +112,13 @@ private:
   }
 
   ABIArgInfo(Kind K)
-      : TheKind(K), PaddingInReg(false), InReg(false), SuppressSRet(false) {
-  }
+      : TypeData(nullptr), PaddingType(nullptr), DirectOffset(0),
+        TheKind(K), PaddingInReg(false), InAllocaSRet(false), IndirectByVal(false),
+        IndirectRealign(false), SRetAfterThis(false), InReg(false),
+        CanBeFlattened(false), SignExt(false), SuppressSRet(false) {}
 
 public:
-  ABIArgInfo()
-      : TypeData(nullptr), PaddingType(nullptr), DirectOffset(0),
-        TheKind(Direct), PaddingInReg(false), InReg(false),
-        SuppressSRet(false) {}
+  ABIArgInfo() : ABIArgInfo(Direct) {}
 
   static ABIArgInfo getDirect(llvm::Type *T = nullptr, unsigned Offset = 0,
                               llvm::Type *Padding = nullptr,
-- 
2.19.2

