r286096 - Deduplicate replacements by FileEntry instead of file names.

Eric Liu via cfe-commits cfe-commits at lists.llvm.org
Mon Nov 7 10:53:34 PST 2016


r286132 should fix this.

On Mon, Nov 7, 2016 at 10:40 AM Eric Liu <ioeric at google.com> wrote:

Thanks Kostya! I'll look into this now.

On Mon, Nov 7, 2016 at 10:39 AM Kostya Serebryany <kcc at google.com> wrote:

Hi Eric,

the asan bootstrap bot shows a leak in this newly added tests. Please fix
or revert ASAP.
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/136/steps/check-clang%20asan/logs/stdio

Direct leak of 720 byte(s) in 1 object(s) allocated from:
    #0 0x6ace50 in operator new(unsigned long)
/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/llvm/projects/compiler-rt/lib/asan/asan_new_delete.cc:82
    #1 0xc83f64 in
clang::tooling::DeduplicateByFileTest_NonExistingFilePath_Test::TestBody()
/mnt/b/sanitizer-buildbot2/sanitizer-x86_64-linux-bootstrap/build/llvm/tools/clang/unittests/Tooling/Re


On Sun, Nov 6, 2016 at 10:08 PM, Eric Liu via cfe-commits <
cfe-commits at lists.llvm.org> wrote:

Author: ioeric
Date: Mon Nov  7 00:08:23 2016
New Revision: 286096

URL: http://llvm.org/viewvc/llvm-project?rev=286096&view=rev
Log:
Deduplicate replacements by FileEntry instead of file names.

Summary:
The current version does not deduplicate equivalent file paths correctly.
For example, a relative path and an absolute path are considered
inequivalent.
Comparing FileEnry addresses these issues.

Reviewers: djasper

Subscribers: alexshap, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D26288

Modified:
    cfe/trunk/include/clang/Tooling/Core/Replacement.h
    cfe/trunk/lib/Tooling/Core/Replacement.cpp
    cfe/trunk/lib/Tooling/Refactoring.cpp
    cfe/trunk/unittests/Tooling/RefactoringTest.cpp

Modified: cfe/trunk/include/clang/Tooling/Core/Replacement.h
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Tooling/Core/Replacement.h?rev=286096&r1=286095&r2=286096&view=diff
==============================================================================
--- cfe/trunk/include/clang/Tooling/Core/Replacement.h (original)
+++ cfe/trunk/include/clang/Tooling/Core/Replacement.h Mon Nov  7 00:08:23
2016
@@ -19,6 +19,7 @@
 #ifndef LLVM_CLANG_TOOLING_CORE_REPLACEMENT_H
 #define LLVM_CLANG_TOOLING_CORE_REPLACEMENT_H

+#include "clang/Basic/FileManager.h"
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/SourceLocation.h"
 #include "llvm/ADT/StringRef.h"
@@ -293,9 +294,10 @@ calculateRangesAfterReplacements(const R
                                  const std::vector<Range> &Ranges);

 /// \brief If there are multiple <File, Replacements> pairs with the same
file
-/// path after removing dots, we only keep one pair (with path after dots
being
-/// removed) and discard the rest.
+/// entry, we only keep one pair and discard the rest.
+/// If a file does not exist, its corresponding replacements will be
ignored.
 std::map<std::string, Replacements> groupReplacementsByFile(
+    FileManager &FileMgr,
     const std::map<std::string, Replacements> &FileToReplaces);

 template <typename Node>

Modified: cfe/trunk/lib/Tooling/Core/Replacement.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Tooling/Core/Replacement.cpp?rev=286096&r1=286095&r2=286096&view=diff
==============================================================================
--- cfe/trunk/lib/Tooling/Core/Replacement.cpp (original)
+++ cfe/trunk/lib/Tooling/Core/Replacement.cpp Mon Nov  7 00:08:23 2016
@@ -20,6 +20,7 @@
 #include "clang/Basic/SourceManager.h"
 #include "clang/Lex/Lexer.h"
 #include "clang/Rewrite/Core/Rewriter.h"
+#include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/raw_os_ostream.h"
@@ -566,12 +567,16 @@ llvm::Expected<std::string> applyAllRepl
 }

 std::map<std::string, Replacements> groupReplacementsByFile(
+    FileManager &FileMgr,
     const std::map<std::string, Replacements> &FileToReplaces) {
   std::map<std::string, Replacements> Result;
+  llvm::SmallPtrSet<const FileEntry *, 16> ProcessedFileEntries;
   for (const auto &Entry : FileToReplaces) {
-    llvm::SmallString<256> CleanPath(Entry.first);
-    llvm::sys::path::remove_dots(CleanPath, /*remove_dot_dot=*/true);
-    Result[CleanPath.str()] = std::move(Entry.second);
+    const FileEntry *FE = FileMgr.getFile(Entry.first);
+    if (!FE)
+      llvm::errs() << "File path " << Entry.first << " is invalid.\n";
+    else if (ProcessedFileEntries.insert(FE).second)
+      Result[Entry.first] = std::move(Entry.second);
   }
   return Result;
 }

Modified: cfe/trunk/lib/Tooling/Refactoring.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Tooling/Refactoring.cpp?rev=286096&r1=286095&r2=286096&view=diff
==============================================================================
--- cfe/trunk/lib/Tooling/Refactoring.cpp (original)
+++ cfe/trunk/lib/Tooling/Refactoring.cpp Mon Nov  7 00:08:23 2016
@@ -57,7 +57,8 @@ int RefactoringTool::runAndSave(Frontend

 bool RefactoringTool::applyAllReplacements(Rewriter &Rewrite) {
   bool Result = true;
-  for (const auto &Entry : groupReplacementsByFile(FileToReplaces))
+  for (const auto &Entry : groupReplacementsByFile(
+           Rewrite.getSourceMgr().getFileManager(), FileToReplaces))
     Result = tooling::applyAllReplacements(Entry.second, Rewrite) &&
Result;
   return Result;
 }
@@ -73,7 +74,8 @@ bool formatAndApplyAllReplacements(
   FileManager &Files = SM.getFileManager();

   bool Result = true;
-  for (const auto &FileAndReplaces :
groupReplacementsByFile(FileToReplaces)) {
+  for (const auto &FileAndReplaces : groupReplacementsByFile(
+           Rewrite.getSourceMgr().getFileManager(), FileToReplaces)) {
     const std::string &FilePath = FileAndReplaces.first;
     auto &CurReplaces = FileAndReplaces.second;


Modified: cfe/trunk/unittests/Tooling/RefactoringTest.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/unittests/Tooling/RefactoringTest.cpp?rev=286096&r1=286095&r2=286096&view=diff
==============================================================================
--- cfe/trunk/unittests/Tooling/RefactoringTest.cpp (original)
+++ cfe/trunk/unittests/Tooling/RefactoringTest.cpp Mon Nov  7 00:08:23 2016
@@ -19,6 +19,7 @@
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/SourceManager.h"
+#include "clang/Basic/VirtualFileSystem.h"
 #include "clang/Format/Format.h"
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Frontend/FrontendAction.h"
@@ -972,40 +973,64 @@ TEST_F(MergeReplacementsTest, Overlappin
       toReplacements({{"", 0, 3, "cc"}, {"", 3, 3, "dd"}}));
 }

-TEST(DeduplicateByFileTest, LeaveLeadingDotDot) {
+TEST(DeduplicateByFileTest, PathsWithDots) {
   std::map<std::string, Replacements> FileToReplaces;
+  llvm::IntrusiveRefCntPtr<vfs::InMemoryFileSystem> VFS(
+      new vfs::InMemoryFileSystem());
+  FileManager *FileMgr = new FileManager(FileSystemOptions(), VFS);
 #if !defined(LLVM_ON_WIN32)
-  FileToReplaces["../../a/b/.././c.h"] = Replacements();
-  FileToReplaces["../../a/c.h"] = Replacements();
+  StringRef Path1 = "a/b/.././c.h";
+  StringRef Path2 = "a/c.h";
 #else
-  FileToReplaces["..\\..\\a\\b\\..\\.\\c.h"] = Replacements();
-  FileToReplaces["..\\..\\a\\c.h"] = Replacements();
+  StringRef Path1 = "a\\b\\..\\.\\c.h";
+  StringRef Path2 = "a\\c.h";
 #endif
-  FileToReplaces = groupReplacementsByFile(FileToReplaces);
+  EXPECT_TRUE(VFS->addFile(Path1, 0,
llvm::MemoryBuffer::getMemBuffer("")));
+  EXPECT_TRUE(VFS->addFile(Path2, 0,
llvm::MemoryBuffer::getMemBuffer("")));
+  FileToReplaces[Path1] = Replacements();
+  FileToReplaces[Path2] = Replacements();
+  FileToReplaces = groupReplacementsByFile(*FileMgr, FileToReplaces);
   EXPECT_EQ(1u, FileToReplaces.size());
-#if !defined(LLVM_ON_WIN32)
-  EXPECT_EQ("../../a/c.h", FileToReplaces.begin()->first);
-#else
-  EXPECT_EQ("..\\..\\a\\c.h", FileToReplaces.begin()->first);
-#endif
+  EXPECT_EQ(Path1, FileToReplaces.begin()->first);
 }

-TEST(DeduplicateByFileTest, RemoveDotSlash) {
+TEST(DeduplicateByFileTest, PathWithDotSlash) {
   std::map<std::string, Replacements> FileToReplaces;
+  llvm::IntrusiveRefCntPtr<vfs::InMemoryFileSystem> VFS(
+      new vfs::InMemoryFileSystem());
+  FileManager *FileMgr = new FileManager(FileSystemOptions(), VFS);
 #if !defined(LLVM_ON_WIN32)
-  FileToReplaces["./a/b/.././c.h"] = Replacements();
-  FileToReplaces["a/c.h"] = Replacements();
+  StringRef Path1 = "./a/b/c.h";
+  StringRef Path2 = "a/b/c.h";
 #else
-  FileToReplaces[".\\a\\b\\..\\.\\c.h"] = Replacements();
-  FileToReplaces["a\\c.h"] = Replacements();
+  StringRef Path1 = ".\\a\\b\\c.h";
+  StringRef Path2 = "a\\b\\c.h";
 #endif
-  FileToReplaces = groupReplacementsByFile(FileToReplaces);
+  EXPECT_TRUE(VFS->addFile(Path1, 0,
llvm::MemoryBuffer::getMemBuffer("")));
+  EXPECT_TRUE(VFS->addFile(Path2, 0,
llvm::MemoryBuffer::getMemBuffer("")));
+  FileToReplaces[Path1] = Replacements();
+  FileToReplaces[Path2] = Replacements();
+  FileToReplaces = groupReplacementsByFile(*FileMgr, FileToReplaces);
   EXPECT_EQ(1u, FileToReplaces.size());
+  EXPECT_EQ(Path1, FileToReplaces.begin()->first);
+}
+
+TEST(DeduplicateByFileTest, NonExistingFilePath) {
+  std::map<std::string, Replacements> FileToReplaces;
+  llvm::IntrusiveRefCntPtr<vfs::InMemoryFileSystem> VFS(
+      new vfs::InMemoryFileSystem());
+  FileManager *FileMgr = new FileManager(FileSystemOptions(), VFS);
 #if !defined(LLVM_ON_WIN32)
-  EXPECT_EQ("a/c.h", FileToReplaces.begin()->first);
+  StringRef Path1 = "./a/b/c.h";
+  StringRef Path2 = "a/b/c.h";
 #else
-  EXPECT_EQ("a\\c.h", FileToReplaces.begin()->first);
+  StringRef Path1 = ".\\a\\b\\c.h";
+  StringRef Path2 = "a\\b\\c.h";
 #endif
+  FileToReplaces[Path1] = Replacements();
+  FileToReplaces[Path2] = Replacements();
+  FileToReplaces = groupReplacementsByFile(*FileMgr, FileToReplaces);
+  EXPECT_TRUE(FileToReplaces.empty());
 }

 } // end namespace tooling


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