[clang-tools-extra] r331930 - [clang-tidy] Adding RestrictSystemIncludes check to Fuchsia module

Julie Hockett via cfe-commits cfe-commits at lists.llvm.org
Wed May 9 15:25:42 PDT 2018


Author: juliehockett
Date: Wed May  9 15:25:42 2018
New Revision: 331930

URL: http://llvm.org/viewvc/llvm-project?rev=331930&view=rev
Log:
[clang-tidy] Adding RestrictSystemIncludes check to Fuchsia module

Adding a check to restrict system includes to a whitelist. Given a list
of includes that are explicitly allowed, the check issues a fixit to
remove any system include not on that list from the source file.

Differential Revision: https://reviews.llvm.org/D43778

Added:
    clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.cpp
    clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.h
    clang-tools-extra/trunk/docs/clang-tidy/checks/fuchsia-restrict-system-includes.rst
    clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/
    clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/a.h
    clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/
    clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/j.h
    clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/r.h
    clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/s.h
    clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/t.h
    clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/transitive.h
    clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/transitive2.h
    clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes-headers.cpp
    clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes.cpp
Modified:
    clang-tools-extra/trunk/clang-tidy/fuchsia/CMakeLists.txt
    clang-tools-extra/trunk/clang-tidy/fuchsia/FuchsiaTidyModule.cpp
    clang-tools-extra/trunk/docs/ReleaseNotes.rst
    clang-tools-extra/trunk/docs/clang-tidy/checks/list.rst

Modified: clang-tools-extra/trunk/clang-tidy/fuchsia/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/fuchsia/CMakeLists.txt?rev=331930&r1=331929&r2=331930&view=diff
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/fuchsia/CMakeLists.txt (original)
+++ clang-tools-extra/trunk/clang-tidy/fuchsia/CMakeLists.txt Wed May  9 15:25:42 2018
@@ -5,6 +5,7 @@ add_clang_library(clangTidyFuchsiaModule
   FuchsiaTidyModule.cpp
   MultipleInheritanceCheck.cpp
   OverloadedOperatorCheck.cpp
+  RestrictSystemIncludesCheck.cpp
   StaticallyConstructedObjectsCheck.cpp
   TrailingReturnCheck.cpp
   VirtualInheritanceCheck.cpp

Modified: clang-tools-extra/trunk/clang-tidy/fuchsia/FuchsiaTidyModule.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/fuchsia/FuchsiaTidyModule.cpp?rev=331930&r1=331929&r2=331930&view=diff
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/fuchsia/FuchsiaTidyModule.cpp (original)
+++ clang-tools-extra/trunk/clang-tidy/fuchsia/FuchsiaTidyModule.cpp Wed May  9 15:25:42 2018
@@ -14,6 +14,7 @@
 #include "DefaultArgumentsCheck.h"
 #include "MultipleInheritanceCheck.h"
 #include "OverloadedOperatorCheck.h"
+#include "RestrictSystemIncludesCheck.h"
 #include "StaticallyConstructedObjectsCheck.h"
 #include "TrailingReturnCheck.h"
 #include "VirtualInheritanceCheck.h"
@@ -36,6 +37,8 @@ public:
         "fuchsia-multiple-inheritance");
     CheckFactories.registerCheck<OverloadedOperatorCheck>(
         "fuchsia-overloaded-operator");
+    CheckFactories.registerCheck<RestrictSystemIncludesCheck>(
+        "fuchsia-restrict-system-includes");
     CheckFactories.registerCheck<StaticallyConstructedObjectsCheck>(
         "fuchsia-statically-constructed-objects");
     CheckFactories.registerCheck<TrailingReturnCheck>(

Added: clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.cpp?rev=331930&view=auto
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.cpp (added)
+++ clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.cpp Wed May  9 15:25:42 2018
@@ -0,0 +1,126 @@
+//===--- RestrictSystemIncludesCheck.cpp - clang-tidy----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "RestrictSystemIncludesCheck.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Lex/HeaderSearch.h"
+#include "clang/Lex/PPCallbacks.h"
+#include "clang/Lex/Preprocessor.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/Support/Path.h"
+#include <cstring>
+
+namespace clang {
+namespace tidy {
+namespace fuchsia {
+
+class RestrictedIncludesPPCallbacks : public PPCallbacks {
+public:
+  explicit RestrictedIncludesPPCallbacks(RestrictSystemIncludesCheck &Check,
+                                         SourceManager &SM)
+      : Check(Check), SM(SM) {}
+
+  void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
+                          StringRef FileName, bool IsAngled,
+                          CharSourceRange FilenameRange, const FileEntry *File,
+                          StringRef SearchPath, StringRef RelativePath,
+                          const Module *Imported,
+                          SrcMgr::CharacteristicKind FileType) override;
+  void EndOfMainFile() override;
+
+private:
+  struct IncludeDirective {
+    IncludeDirective() = default;
+    IncludeDirective(SourceLocation Loc, CharSourceRange Range,
+                     StringRef Filename, StringRef FullPath, bool IsInMainFile)
+        : Loc(Loc), Range(Range), IncludeFile(Filename), IncludePath(FullPath),
+          IsInMainFile(IsInMainFile) {}
+
+    SourceLocation Loc;      // '#' location in the include directive
+    CharSourceRange Range;   // SourceRange for the file name
+    std::string IncludeFile; // Filename as a string
+    std::string IncludePath; // Full file path as a string
+    bool IsInMainFile;       // Whether or not the include is in the main file
+  };
+
+  using FileIncludes = llvm::SmallVector<IncludeDirective, 8>;
+  llvm::SmallDenseMap<FileID, FileIncludes> IncludeDirectives;
+
+  RestrictSystemIncludesCheck &Check;
+  SourceManager &SM;
+};
+
+void RestrictedIncludesPPCallbacks::InclusionDirective(
+    SourceLocation HashLoc, const Token &IncludeTok, StringRef FileName,
+    bool IsAngled, CharSourceRange FilenameRange, const FileEntry *File,
+    StringRef SearchPath, StringRef RelativePath, const Module *Imported,
+    SrcMgr::CharacteristicKind FileType) {
+  if (!llvm::is_contained(Check.getAllowedIncludes(), FileName) &&
+      SrcMgr::isSystem(FileType)) {
+    SmallString<256> FullPath;
+    llvm::sys::path::append(FullPath, SearchPath);
+    llvm::sys::path::append(FullPath, RelativePath);
+    // Bucket the allowed include directives by the id of the file they were
+    // declared in.
+    IncludeDirectives[SM.getFileID(HashLoc)].emplace_back(
+        HashLoc, FilenameRange, FileName, FullPath.str(),
+        SM.isInMainFile(HashLoc));
+  }
+}
+
+void RestrictedIncludesPPCallbacks::EndOfMainFile() {
+  if (IncludeDirectives.empty())
+    return;
+
+  for (const auto &Bucket : IncludeDirectives) {
+    const FileIncludes &FileDirectives = Bucket.second;
+
+    // Emit fixits for all restricted includes.
+    for (const auto &Include : FileDirectives) {
+      // Fetch the length of the include statement from the start to just after
+      // the newline, for finding the end (including the newline).
+      unsigned ToLen = std::strcspn(SM.getCharacterData(Include.Loc), "\n") + 1;
+      CharSourceRange ToRange = CharSourceRange::getCharRange(
+          Include.Loc, Include.Loc.getLocWithOffset(ToLen));
+
+      if (!Include.IsInMainFile) {
+        auto D = Check.diag(
+            Include.Loc,
+            "system include %0 not allowed, transitively included from %1");
+        D << Include.IncludeFile << SM.getFilename(Include.Loc);
+        D << FixItHint::CreateRemoval(ToRange);
+        continue;
+      }
+      auto D = Check.diag(Include.Loc, "system include %0 not allowed");
+      D << Include.IncludeFile;
+      D << FixItHint::CreateRemoval(ToRange);
+    }
+  }
+}
+
+void RestrictSystemIncludesCheck::registerPPCallbacks(
+    CompilerInstance &Compiler) {
+  // Do nothing if there are no restricted includes.
+  if (AllowedIncludes.empty())
+    return;
+  Compiler.getPreprocessor().addPPCallbacks(
+      llvm::make_unique<RestrictedIncludesPPCallbacks>(
+          *this, Compiler.getSourceManager()));
+}
+
+void RestrictSystemIncludesCheck::storeOptions(
+    ClangTidyOptions::OptionMap &Opts) {
+  Options.store(Opts, "Includes",
+                utils::options::serializeStringList(AllowedIncludes));
+}
+
+} // namespace fuchsia
+} // namespace tidy
+} // namespace clang

Added: clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.h?rev=331930&view=auto
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.h (added)
+++ clang-tools-extra/trunk/clang-tidy/fuchsia/RestrictSystemIncludesCheck.h Wed May  9 15:25:42 2018
@@ -0,0 +1,46 @@
+//===--- RestrictSystemIncludesCheck.h - clang-tidy---------- ----*- C++-*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_FUCHSIA_RESTRICTINCLUDESSCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_FUCHSIA_RESTRICTINCLUDESSCHECK_H
+
+#include "../ClangTidy.h"
+#include "../utils/OptionsUtils.h"
+
+namespace clang {
+namespace tidy {
+namespace fuchsia {
+
+/// Checks for allowed includes and suggests removal of any others. If no
+/// includes are specified, the check will exit without issuing any warnings.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/fuchsia-restrict-system-includes.html
+class RestrictSystemIncludesCheck : public ClangTidyCheck {
+public:
+  RestrictSystemIncludesCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context),
+        AllowedIncludes(
+            utils::options::parseStringList(Options.get("Includes", ""))) {}
+
+  void registerPPCallbacks(CompilerInstance &Compiler) override;
+  void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
+  const std::vector<std::string> &getAllowedIncludes() const {
+    return AllowedIncludes;
+  }
+
+private:
+  std::vector<std::string> AllowedIncludes;
+};
+
+} // namespace fuchsia
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_FUCHSIA_RESTRICTINCLUDESSCHECK_H

Modified: clang-tools-extra/trunk/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/docs/ReleaseNotes.rst?rev=331930&r1=331929&r2=331930&view=diff
==============================================================================
--- clang-tools-extra/trunk/docs/ReleaseNotes.rst (original)
+++ clang-tools-extra/trunk/docs/ReleaseNotes.rst Wed May  9 15:25:42 2018
@@ -110,8 +110,14 @@ Improvements to clang-tidy
   Checks whether a ``std::string::find()`` result is compared with 0, and
   suggests replacing with ``absl::StartsWith()``.
 
-- New :doc:`fuchsia-statically-constructed-objects
-  <clang-tidy/checks/fuchsia-statically-constructed-objects>` check.
+- New `fuchsia-restrict-system-includes
+  <http://clang.llvm.org/extra/clang-tidy/checks/fuchsia-restrict-system-includes.html>`_ check
+
+  Checks for allowed system includes and suggests removal of any others. If no
+  includes are specified, the check will exit without issuing any warnings.
+
+- New `fuchsia-statically-constructed-objects
+  <http://clang.llvm.org/extra/clang-tidy/checks/fuchsia-statically-constructed-objects.html>`_ check
 
   Warns if global, non-trivial objects with static storage are constructed,
   unless the object is statically initialized with a ``constexpr`` constructor

Added: clang-tools-extra/trunk/docs/clang-tidy/checks/fuchsia-restrict-system-includes.rst
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/docs/clang-tidy/checks/fuchsia-restrict-system-includes.rst?rev=331930&view=auto
==============================================================================
--- clang-tools-extra/trunk/docs/clang-tidy/checks/fuchsia-restrict-system-includes.rst (added)
+++ clang-tools-extra/trunk/docs/clang-tidy/checks/fuchsia-restrict-system-includes.rst Wed May  9 15:25:42 2018
@@ -0,0 +1,32 @@
+.. title:: clang-tidy - fuchsia-restrict-system-includes
+
+fuchsia-restrict-system-includes
+================================
+
+Checks for allowed system includes and suggests removal of any others. If no
+includes are specified, the check will exit without issuing any warnings. 
+
+It is important to note that running this check with fixes may break code, as
+the fix removes headers. Fixes are applied to source and header files, but not
+to system headers.
+
+Note that the separator for identifying allowed includes is a semi-colon, and
+therefore this check is unable to allow an include with a semi-colon in the
+filename (e.g. 'foo;bar.h' will be parsed as allowing 'foo' and 'bar.h', and not
+as allowing a file called 'foo;bar.h').
+
+For example, given the allowed system includes 'a.h; b.h':
+
+.. code-block:: c++
+
+  #include <a.h>
+  #include <b.h>
+  #include <c.h>    // Warning, as c.h is not explicitly allowed
+  
+Options
+-------
+
+.. option:: Includes
+
+   A string containing a semi-colon separated list of allowed include filenames.
+   The default is an empty string, which allows all includes.

Modified: clang-tools-extra/trunk/docs/clang-tidy/checks/list.rst
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/docs/clang-tidy/checks/list.rst?rev=331930&r1=331929&r2=331930&view=diff
==============================================================================
--- clang-tools-extra/trunk/docs/clang-tidy/checks/list.rst (original)
+++ clang-tools-extra/trunk/docs/clang-tidy/checks/list.rst Wed May  9 15:25:42 2018
@@ -95,6 +95,7 @@ Clang-Tidy Checks
    fuchsia-default-arguments
    fuchsia-multiple-inheritance
    fuchsia-overloaded-operator
+   fuchsia-restrict-system-includes
    fuchsia-statically-constructed-objects
    fuchsia-trailing-return
    fuchsia-virtual-inheritance

Added: clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/a.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/a.h?rev=331930&view=auto
==============================================================================
    (empty)

Added: clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/j.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/j.h?rev=331930&view=auto
==============================================================================
    (empty)

Added: clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/r.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/r.h?rev=331930&view=auto
==============================================================================
--- clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/r.h (added)
+++ clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/r.h Wed May  9 15:25:42 2018
@@ -0,0 +1 @@
+void f() {}

Added: clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/s.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/s.h?rev=331930&view=auto
==============================================================================
    (empty)

Added: clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/t.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/t.h?rev=331930&view=auto
==============================================================================
    (empty)

Added: clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/transitive.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/transitive.h?rev=331930&view=auto
==============================================================================
--- clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/transitive.h (added)
+++ clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/system/transitive.h Wed May  9 15:25:42 2018
@@ -0,0 +1,3 @@
+#include <r.h>
+#include <t.h>
+#include <s.h>

Added: clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/transitive2.h
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/transitive2.h?rev=331930&view=auto
==============================================================================
--- clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/transitive2.h (added)
+++ clang-tools-extra/trunk/test/clang-tidy/Inputs/fuchsia-restrict-system-includes/transitive2.h Wed May  9 15:25:42 2018
@@ -0,0 +1,2 @@
+#include <s.h>
+#include <t.h>

Added: clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes-headers.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes-headers.cpp?rev=331930&view=auto
==============================================================================
--- clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes-headers.cpp (added)
+++ clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes-headers.cpp Wed May  9 15:25:42 2018
@@ -0,0 +1,20 @@
+// RUN: cp -r %S/Inputs/fuchsia-restrict-system-includes %T/Inputs
+// RUN: %check_clang_tidy %s fuchsia-restrict-system-includes %t \
+// RUN:		-- -config="{CheckOptions: [{key: fuchsia-restrict-system-includes.Includes, value: 'transitive.h;s.h'}]}" \
+// RUN:   -system-headers -header-filter=.* \
+// RUN:   -- -std=c++11 -I %T/Inputs/fuchsia-restrict-system-includes -isystem %T/Inputs/fuchsia-restrict-system-includes/system
+// RUN: FileCheck -input-file=%T/Inputs/transitive2.h %s -check-prefix=CHECK-HEADER-FIXES
+
+// transitive.h includes <r.h> and <t.h>
+#include <transitive.h>
+// CHECK-MESSAGES: :1:1: warning: system include r.h not allowed, transitively included from {{(.*\/)*}}Inputs/fuchsia-restrict-system-includes/system/transitive.h
+// CHECK-MESSAGES: :2:1: warning: system include t.h not allowed, transitively included from {{(.*\/)*}}Inputs/fuchsia-restrict-system-includes/system/transitive.h
+
+// transitive.h includes <s.h> and <t.h>
+#include "transitive2.h"
+// CHECK-MESSAGES: :2:1: warning: system include t.h not allowed, transitively included from {{(.*\/)*}}Inputs/fuchsia-restrict-system-includes/transitive2.h
+// CHECK-HEADER-FIXES-NOT: #include <t.h>
+
+int main() {
+  // f() is declared in r.h
+}

Added: clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes.cpp?rev=331930&view=auto
==============================================================================
--- clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes.cpp (added)
+++ clang-tools-extra/trunk/test/clang-tidy/fuchsia-restrict-system-includes.cpp Wed May  9 15:25:42 2018
@@ -0,0 +1,25 @@
+// RUN: %check_clang_tidy %s fuchsia-restrict-system-includes %t \
+// RUN:		-- -config="{CheckOptions: [{key: fuchsia-restrict-system-includes.Includes, value: 's.h'}]}" \
+// RUN:   -- -std=c++11 -I %S/Inputs/fuchsia-restrict-system-includes -isystem %S/Inputs/fuchsia-restrict-system-includes/system
+
+#include "a.h"
+
+#include <s.h>
+#include <t.h>
+// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: system include t.h not allowed
+// CHECK-FIXES-NOT: #include <t.h>
+
+#include "s.h"
+#include "t.h"
+// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: system include t.h not allowed
+// CHECK-FIXES-NOT: #include "t.h"
+
+#define foo <j.h>
+
+#include foo
+// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: system include j.h not allowed
+// CHECK-FIXES-NOT: #include foo
+
+#/* comment */ include /* comment */ foo
+// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: system include j.h not allowed
+// CHECK-FIXES-NOT: # /* comment */ include /* comment */ foo




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