From cfca06d7963fa0909f90483b42a6d7d194d01e08 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sun, 26 Jul 2020 19:36:28 +0000
Subject: Vendor import of llvm-project master 2e10b7a39b9, the last commit
 before the llvmorg-12-init tag, from which release/11.x was branched.

---
 clang/lib/Tooling/CompilationDatabase.cpp | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

(limited to 'clang/lib/Tooling/CompilationDatabase.cpp')

diff --git a/clang/lib/Tooling/CompilationDatabase.cpp b/clang/lib/Tooling/CompilationDatabase.cpp
index c453e8d7df19..2b4c26dab96f 100644
--- a/clang/lib/Tooling/CompilationDatabase.cpp
+++ b/clang/lib/Tooling/CompilationDatabase.cpp
@@ -64,16 +64,14 @@ std::unique_ptr<CompilationDatabase>
 CompilationDatabase::loadFromDirectory(StringRef BuildDirectory,
                                        std::string &ErrorMessage) {
   llvm::raw_string_ostream ErrorStream(ErrorMessage);
-  for (CompilationDatabasePluginRegistry::iterator
-       It = CompilationDatabasePluginRegistry::begin(),
-       Ie = CompilationDatabasePluginRegistry::end();
-       It != Ie; ++It) {
+  for (const CompilationDatabasePluginRegistry::entry &Database :
+       CompilationDatabasePluginRegistry::entries()) {
     std::string DatabaseErrorMessage;
-    std::unique_ptr<CompilationDatabasePlugin> Plugin(It->instantiate());
+    std::unique_ptr<CompilationDatabasePlugin> Plugin(Database.instantiate());
     if (std::unique_ptr<CompilationDatabase> DB =
             Plugin->loadFromDirectory(BuildDirectory, DatabaseErrorMessage))
       return DB;
-    ErrorStream << It->getName() << ": " << DatabaseErrorMessage << "\n";
+    ErrorStream << Database.getName() << ": " << DatabaseErrorMessage << "\n";
   }
   return nullptr;
 }
@@ -164,7 +162,7 @@ private:
     case driver::Action::InputClass:
       if (Collect) {
         const auto *IA = cast<driver::InputAction>(A);
-        Inputs.push_back(IA->getInputArg().getSpelling());
+        Inputs.push_back(std::string(IA->getInputArg().getSpelling()));
       }
       break;
 
@@ -233,7 +231,7 @@ std::string GetClangToolCommand() {
   SmallString<128> ClangToolPath;
   ClangToolPath = llvm::sys::path::parent_path(ClangExecutable);
   llvm::sys::path::append(ClangToolPath, "clang-tool");
-  return ClangToolPath.str();
+  return std::string(ClangToolPath.str());
 }
 
 } // namespace
@@ -368,8 +366,14 @@ FixedCompilationDatabase::loadFromFile(StringRef Path, std::string &ErrorMsg) {
     ErrorMsg = "Error while opening fixed database: " + Result.message();
     return nullptr;
   }
-  std::vector<std::string> Args{llvm::line_iterator(**File),
-                                llvm::line_iterator()};
+  std::vector<std::string> Args;
+  for (llvm::StringRef Line :
+       llvm::make_range(llvm::line_iterator(**File), llvm::line_iterator())) {
+    // Stray whitespace is almost certainly unintended.
+    Line = Line.trim();
+    if (!Line.empty())
+      Args.push_back(Line.str());
+  }
   return std::make_unique<FixedCompilationDatabase>(
       llvm::sys::path::parent_path(Path), std::move(Args));
 }
@@ -387,8 +391,8 @@ FixedCompilationDatabase(Twine Directory, ArrayRef<std::string> CommandLine) {
 std::vector<CompileCommand>
 FixedCompilationDatabase::getCompileCommands(StringRef FilePath) const {
   std::vector<CompileCommand> Result(CompileCommands);
-  Result[0].CommandLine.push_back(FilePath);
-  Result[0].Filename = FilePath;
+  Result[0].CommandLine.push_back(std::string(FilePath));
+  Result[0].Filename = std::string(FilePath);
   return Result;
 }
 
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