[PATCH] D30881: Track skipped files in dependency scanning

[Volodymyr Sapsai via Phabricator via cfe-commits]

vsapsai updated this revision to Diff 144802.
vsapsai added a comment.

- Fix FileSkipped adding system headers when it shouldn't.


https://reviews.llvm.org/D30881

Files:
  clang/lib/Frontend/DependencyFile.cpp
  clang/test/Frontend/Inputs/SystemHeaderPrefix/with-header-guard.h
  clang/test/Frontend/dependency-gen-symlink.c


Index: clang/test/Frontend/dependency-gen-symlink.c
===================================================================
--- /dev/null
+++ clang/test/Frontend/dependency-gen-symlink.c
@@ -0,0 +1,24 @@
+// REQUIRES: shell
+
+// Basic test
+// RUN: rm -rf %t.dir
+// RUN: mkdir %t.dir
+// RUN: mkdir %t.dir/a
+// RUN: mkdir %t.dir/b
+// RUN: echo "#ifndef HEADER_A" > %t.dir/a/header.h
+// RUN: echo "#define HEADER_A" >> %t.dir/a/header.h
+// RUN: echo "#endif" >> %t.dir/a/header.h
+// RUN: ln -s %t.dir/a/header.h %t.dir/b/header.h
+
+// RUN: %clang_cc1 -dependency-file %t.dir/file.deps -MT %s.o %s -fsyntax-only -I %t.dir -isystem %S/Inputs/SystemHeaderPrefix
+// RUN: FileCheck -input-file=%t.dir/file.deps %s
+// CHECK: dependency-gen-symlink.c.o
+// CHECK: dependency-gen-symlink.c
+// CHECK: a/header.h
+// CHECK: b/header.h
+// CHECK-NOT: with-header-guard.h
+#include "a/header.h"
+#include "b/header.h"
+// System header shouldn't be included in dependencies.
+#include <with-header-guard.h>
+#include <with-header-guard.h>
Index: clang/test/Frontend/Inputs/SystemHeaderPrefix/with-header-guard.h
===================================================================
--- /dev/null
+++ clang/test/Frontend/Inputs/SystemHeaderPrefix/with-header-guard.h
@@ -0,0 +1,3 @@
+#ifndef HEADER_GUARD
+#define HEADER_GUARD
+#endif
Index: clang/lib/Frontend/DependencyFile.cpp
===================================================================
--- clang/lib/Frontend/DependencyFile.cpp
+++ clang/lib/Frontend/DependencyFile.cpp
@@ -185,6 +185,10 @@
   void FileChanged(SourceLocation Loc, FileChangeReason Reason,
                    SrcMgr::CharacteristicKind FileType,
                    FileID PrevFID) override;
+
+  void FileSkipped(const FileEntry &SkippedFile, const Token &FilenameTok,
+                   SrcMgr::CharacteristicKind FileType) override;
+
   void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
                           StringRef FileName, bool IsAngled,
                           CharSourceRange FilenameRange, const FileEntry *File,
@@ -291,6 +295,16 @@
   AddFilename(llvm::sys::path::remove_leading_dotslash(Filename));
 }
 
+void DFGImpl::FileSkipped(const FileEntry &SkippedFile,
+                          const Token &FilenameTok,
+                          SrcMgr::CharacteristicKind FileType) {
+  StringRef Filename = SkippedFile.getName();
+  if (!FileMatchesDepCriteria(Filename.data(), FileType))
+    return;
+
+  AddFilename(llvm::sys::path::remove_leading_dotslash(Filename));
+}
+
 void DFGImpl::InclusionDirective(SourceLocation HashLoc,
                                  const Token &IncludeTok,
                                  StringRef FileName,


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D30881.144802.patch
Type: text/x-patch
Size: 2713 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20180501/f4ad10d1/attachment-0001.bin>