From 9bb54f6ffe3f71d8a03b0abd08de39ddef35cc68 Mon Sep 17 00:00:00 2001
From: LLVM Packaging Team <pkg-llvm-team@lists.alioth.debian.org>
Date: Wed, 7 Aug 2019 14:11:36 +0100
Subject: [PATCH] reproducible-pch

Author: Rebecca N. Palmer <rebecca_palmer@zoho.com>
Bug-Debian: https://bugs.debian.org/877359
Forwarded: no


Gbp-Pq: Name reproducible-pch.diff
---
 clang/lib/Serialization/ASTWriter.cpp | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp
index 37adcb706..9124ab4af 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -4279,9 +4279,13 @@ void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
     return;
 
   RecordData Record;
+  // Sort to allow reproducible .pch files - https://bugs.debian.org/877359
+  std::map<TypeID, std::set<std::string>> sortedOpenCLTypeExtMap;
   for (const auto &I : SemaRef.OpenCLTypeExtMap) {
-    Record.push_back(
-        static_cast<unsigned>(getTypeID(I.first->getCanonicalTypeInternal())));
+    sortedOpenCLTypeExtMap[getTypeID(I.first->getCanonicalTypeInternal())]=I.second;
+  }
+  for (const auto &I : sortedOpenCLTypeExtMap) {
+    Record.push_back(static_cast<unsigned>(I.first));
     Record.push_back(I.second.size());
     for (auto Ext : I.second)
       AddString(Ext, Record);
@@ -4294,8 +4298,12 @@ void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
     return;
 
   RecordData Record;
+  std::map<DeclID, std::set<std::string>> sortedOpenCLDeclExtMap;
   for (const auto &I : SemaRef.OpenCLDeclExtMap) {
-    Record.push_back(getDeclID(I.first));
+    sortedOpenCLDeclExtMap[getDeclID(I.first)]=I.second;
+  }
+  for (const auto &I : sortedOpenCLDeclExtMap) {
+    Record.push_back(I.first);
     Record.push_back(static_cast<unsigned>(I.second.size()));
     for (auto Ext : I.second)
       AddString(Ext, Record);
-- 
2.30.2