llvm dev - Sep 2020 - How to add a new clang-tidy module

Hi, all, 

	I am planning to add clang-tidy checkers for my company. How to add a new
module for my company? Please help, thanks in advance.

	I try to copy files from cert module, and rename cert to Misra, then add a rule
named "m-0-1-1" by ./add_new_checker.py.

	then I run ninja check-clang-tool, but my case is failed due to below error

	Running ['clang-tidy',
'/Users/zyg/Documents/workspace/llvm-project/llvm/cmake-build-debug/tools/clang/tools/extra/test/clang-tidy/checkers/Output/misra-m-0-1-1.cpp.tmp.cpp',
'-fix', '--checks=-*,misra-m-0-1-1',
'-format-style=none', '--', '-std=c++11',
'-nostdinc++']... clang-tidy failed: Error: no checks enabled. USAGE:
clang-tidy [options] <source0> [... <sourceN>]



Below is my diff


diff --git a/clang-tools-extra/clang-tidy/CMakeLists.txt
b/clang-tools-extra/clang-tidy/CMakeLists.txt
index ca7a5afed6b..ccb77ef6a62 100644
--- a/clang-tools-extra/clang-tidy/CMakeLists.txt
+++ b/clang-tools-extra/clang-tidy/CMakeLists.txt
@@ -64,6 +64,7 @@ add_subdirectory(linuxkernel)
 add_subdirectory(llvm)
 add_subdirectory(llvmlibc)
 add_subdirectory(misc)
+add_subdirectory(misra)
 add_subdirectory(modernize)
 if(CLANG_TIDY_ENABLE_STATIC_ANALYZER)
   add_subdirectory(mpi)
@@ -90,6 +91,7 @@ set(ALL_CLANG_TIDY_CHECKS
   clangTidyLLVMModule
   clangTidyLLVMLibcModule
   clangTidyMiscModule
+  clangTidyMISRAModule
   clangTidyModernizeModule
   clangTidyObjCModule
   clangTidyOpenMPModule
diff --git a/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
b/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
new file mode 100644
index 00000000000..ca345a946c9
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
@@ -0,0 +1,28 @@
+set(LLVM_LINK_COMPONENTS
+  support
+  FrontendOpenMP
+  )
+
+add_clang_library(clangTidyMISRAModule
+  M011Check.cpp
+  MISRATidyModule.cpp
+  LINK_LIBS
+  clangTidy
+  clangTidyBugproneModule
+  clangTidyGoogleModule
+  clangTidyMiscModule
+  clangTidyPerformanceModule
+  clangTidyReadabilityModule
+  clangTidyUtils
+
+  DEPENDS
+  omp_gen
+)
+
+clang_target_link_libraries(clangTidyMISRAModule
+  PRIVATE
+  clangAST
+  clangASTMatchers
+  clangBasic
+  clangLex
+  )
diff --git a/clang-tools-extra/clang-tidy/misra/M011Check.cpp
b/clang-tools-extra/clang-tidy/misra/M011Check.cpp
new file mode 100644
index 00000000000..ebc0ba3bbe0
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/misra/M011Check.cpp
@@ -0,0 +1,37 @@
+//===--- M011Check.cpp - clang-tidy
---------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "M011Check.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace misra {
+
+void M011Check::registerMatchers(MatchFinder *Finder) {
+  // FIXME: Add matchers.
+  Finder->addMatcher(functionDecl().bind("x"), this);
+}
+
+void M011Check::check(const MatchFinder::MatchResult &Result) {
+  // FIXME: Add callback implementation.
+  const auto *MatchedDecl =
Result.Nodes.getNodeAs<FunctionDecl>("x");
+  if (!MatchedDecl->getIdentifier() ||
MatchedDecl->getName().startswith("awesome_"))
+    return;
+  diag(MatchedDecl->getLocation(), "function %0 is insufficiently
awesome")
+      << MatchedDecl;
+  diag(MatchedDecl->getLocation(), "insert 'awesome'",
DiagnosticIDs::Note)
+      << FixItHint::CreateInsertion(MatchedDecl->getLocation(),
"awesome_");
+}
+
+} // namespace misra
+} // namespace tidy
+} // namespace clang
diff --git a/clang-tools-extra/clang-tidy/misra/M011Check.h
b/clang-tools-extra/clang-tidy/misra/M011Check.h
new file mode 100644
index 00000000000..289d54545c7
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/misra/M011Check.h
@@ -0,0 +1,34 @@
+//===--- M011Check.h - clang-tidy -------------------------------*- C++
-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
+
+#include "../ClangTidyCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace misra {
+
+/// FIXME: Write a short description.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/misra-m-0-1-1.html
+class M011Check : public ClangTidyCheck {
+public:
+  M011Check(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result)
override;
+};
+
+} // namespace misra
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
diff --git a/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
b/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
new file mode 100644
index 00000000000..cb78fa7efe0
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
@@ -0,0 +1,46 @@
+//===--- CERTTidyModule.cpp - clang-tidy
----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "../ClangTidy.h"
+#include "../ClangTidyModule.h"
+#include "../ClangTidyModuleRegistry.h"
+#include "M011Check.h"
+
+
+namespace clang {
+namespace tidy {
+namespace misra {
+
+class MISRAModule : public ClangTidyModule {
+public:
+  void addCheckFactories(ClangTidyCheckFactories &CheckFactories) override
{
+    // C++ checkers
+
+    CheckFactories.registerCheck<M011Check>(
+        "misra-m-0-1-1");
+  }
+
+  ClangTidyOptions getModuleOptions() override {
+    ClangTidyOptions Options;
+    return Options;
+  }
+};
+
+} // namespace misra
+
+// Register the MiscTidyModule using this statically initialized variable.
+static ClangTidyModuleRegistry::Add<misra::MISRAModule>
+    X("misra-module",
+      "Adds lint checks corresponding to CERT secure coding
guidelines.");
+
+// This anchor is used to force the linker to link in the generated object file
+// and thus register the CERTModule.
+volatile int MISRAModuleAnchorSource = 0;
+
+} // namespace tidy
+} // namespace clang
diff --git a/clang-tools-extra/docs/clang-tidy/checks/list.rst
b/clang-tools-extra/docs/clang-tidy/checks/list.rst
index 62bfd314920..144bd80eaab 100644
--- a/clang-tools-extra/docs/clang-tidy/checks/list.rst
+++ b/clang-tools-extra/docs/clang-tidy/checks/list.rst
@@ -213,6 +213,7 @@ Clang-Tidy Checks
    `misc-unused-alias-decls <misc-unused-alias-decls.html>`_,
"Yes"
    `misc-unused-parameters <misc-unused-parameters.html>`_,
"Yes"
    `misc-unused-using-decls <misc-unused-using-decls.html>`_,
"Yes"
+   `misra-m-0-1-1 <misra-m-0-1-1.html>`_, "Yes"
    `modernize-avoid-bind <modernize-avoid-bind.html>`_, "Yes"
    `modernize-avoid-c-arrays <modernize-avoid-c-arrays.html>`_,
    `modernize-concat-nested-namespaces
<modernize-concat-nested-namespaces.html>`_, "Yes"
diff --git a/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
b/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
new file mode 100644
index 00000000000..7fd1cefbca8
--- /dev/null
+++ b/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
@@ -0,0 +1,6 @@
+.. title:: clang-tidy - misra-m-0-1-1
+
+misra-m-0-1-1
+============+
+FIXME: Describe what patterns does the check detect and why. Give examples.
diff --git a/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
b/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
new file mode 100644
index 00000000000..382524ac36b
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
@@ -0,0 +1,14 @@
+// RUN: %check_clang_tidy %s misra-m-0-1-1 %t
+
+// FIXME: Add something that triggers the check here.
+void f();
+// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: function 'f' is
insufficiently awesome [misra-m-0-1-1]
+
+// FIXME: Verify the applied fix.
+//   * Make the CHECK patterns specific enough and try to make verified lines
+//     unique to avoid incorrect matches.
+//   * Use {{}} for regular expressions.
+// CHECK-FIXES: {{^}}void awesome_f();{{$}}
+
+// FIXME: Add something that doesn't trigger the check here.
+void awesome_f2();

See https://reviews.llvm.org/D36836 for modern example of minimal scaffolding.

Roman

On Sun, Sep 27, 2020 at 11:39 AM zhaoyonggang via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> Hi, all,
>
>         I am planning to add clang-tidy checkers for my company. How to add
a new module for my company? Please help, thanks in advance.
>
>         I try to copy files from cert module, and rename cert to Misra,
then add a rule named "m-0-1-1" by ./add_new_checker.py.
>
>         then I run ninja check-clang-tool, but my case is failed due to
below error
>
>         Running ['clang-tidy',
'/Users/zyg/Documents/workspace/llvm-project/llvm/cmake-build-debug/tools/clang/tools/extra/test/clang-tidy/checkers/Output/misra-m-0-1-1.cpp.tmp.cpp',
'-fix', '--checks=-*,misra-m-0-1-1',
'-format-style=none', '--', '-std=c++11',
'-nostdinc++']... clang-tidy failed: Error: no checks enabled. USAGE:
clang-tidy [options] <source0> [... <sourceN>]
>
>
>
> Below is my diff
>
>
> diff --git a/clang-tools-extra/clang-tidy/CMakeLists.txt
b/clang-tools-extra/clang-tidy/CMakeLists.txt
> index ca7a5afed6b..ccb77ef6a62 100644
> --- a/clang-tools-extra/clang-tidy/CMakeLists.txt
> +++ b/clang-tools-extra/clang-tidy/CMakeLists.txt
> @@ -64,6 +64,7 @@ add_subdirectory(linuxkernel)
>  add_subdirectory(llvm)
>  add_subdirectory(llvmlibc)
>  add_subdirectory(misc)
> +add_subdirectory(misra)
>  add_subdirectory(modernize)
>  if(CLANG_TIDY_ENABLE_STATIC_ANALYZER)
>    add_subdirectory(mpi)
> @@ -90,6 +91,7 @@ set(ALL_CLANG_TIDY_CHECKS
>    clangTidyLLVMModule
>    clangTidyLLVMLibcModule
>    clangTidyMiscModule
> +  clangTidyMISRAModule
>    clangTidyModernizeModule
>    clangTidyObjCModule
>    clangTidyOpenMPModule
> diff --git a/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
b/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
> new file mode 100644
> index 00000000000..ca345a946c9
> --- /dev/null
> +++ b/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
> @@ -0,0 +1,28 @@
> +set(LLVM_LINK_COMPONENTS
> +  support
> +  FrontendOpenMP
> +  )
> +
> +add_clang_library(clangTidyMISRAModule
> +  M011Check.cpp
> +  MISRATidyModule.cpp
> +  LINK_LIBS
> +  clangTidy
> +  clangTidyBugproneModule
> +  clangTidyGoogleModule
> +  clangTidyMiscModule
> +  clangTidyPerformanceModule
> +  clangTidyReadabilityModule
> +  clangTidyUtils
> +
> +  DEPENDS
> +  omp_gen
> +)
> +
> +clang_target_link_libraries(clangTidyMISRAModule
> +  PRIVATE
> +  clangAST
> +  clangASTMatchers
> +  clangBasic
> +  clangLex
> +  )
> diff --git a/clang-tools-extra/clang-tidy/misra/M011Check.cpp
b/clang-tools-extra/clang-tidy/misra/M011Check.cpp
> new file mode 100644
> index 00000000000..ebc0ba3bbe0
> --- /dev/null
> +++ b/clang-tools-extra/clang-tidy/misra/M011Check.cpp
> @@ -0,0 +1,37 @@
> +//===--- M011Check.cpp - clang-tidy
---------------------------------------===//
> +//
> +// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
> +// See https://llvm.org/LICENSE.txt for license information.
> +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
> +//
>
+//===----------------------------------------------------------------------===//
> +
> +#include "M011Check.h"
> +#include "clang/AST/ASTContext.h"
> +#include "clang/ASTMatchers/ASTMatchFinder.h"
> +
> +using namespace clang::ast_matchers;
> +
> +namespace clang {
> +namespace tidy {
> +namespace misra {
> +
> +void M011Check::registerMatchers(MatchFinder *Finder) {
> +  // FIXME: Add matchers.
> +  Finder->addMatcher(functionDecl().bind("x"), this);
> +}
> +
> +void M011Check::check(const MatchFinder::MatchResult &Result) {
> +  // FIXME: Add callback implementation.
> +  const auto *MatchedDecl =
Result.Nodes.getNodeAs<FunctionDecl>("x");
> +  if (!MatchedDecl->getIdentifier() ||
MatchedDecl->getName().startswith("awesome_"))
> +    return;
> +  diag(MatchedDecl->getLocation(), "function %0 is insufficiently
awesome")
> +      << MatchedDecl;
> +  diag(MatchedDecl->getLocation(), "insert
'awesome'", DiagnosticIDs::Note)
> +      << FixItHint::CreateInsertion(MatchedDecl->getLocation(),
"awesome_");
> +}
> +
> +} // namespace misra
> +} // namespace tidy
> +} // namespace clang
> diff --git a/clang-tools-extra/clang-tidy/misra/M011Check.h
b/clang-tools-extra/clang-tidy/misra/M011Check.h
> new file mode 100644
> index 00000000000..289d54545c7
> --- /dev/null
> +++ b/clang-tools-extra/clang-tidy/misra/M011Check.h
> @@ -0,0 +1,34 @@
> +//===--- M011Check.h - clang-tidy -------------------------------*- C++
-*-===//
> +//
> +// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
> +// See https://llvm.org/LICENSE.txt for license information.
> +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
> +//
>
+//===----------------------------------------------------------------------===//
> +
> +#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
> +#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
> +
> +#include "../ClangTidyCheck.h"
> +
> +namespace clang {
> +namespace tidy {
> +namespace misra {
> +
> +/// FIXME: Write a short description.
> +///
> +/// For the user-facing documentation see:
> +/// http://clang.llvm.org/extra/clang-tidy/checks/misra-m-0-1-1.html
> +class M011Check : public ClangTidyCheck {
> +public:
> +  M011Check(StringRef Name, ClangTidyContext *Context)
> +      : ClangTidyCheck(Name, Context) {}
> +  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
> +  void check(const ast_matchers::MatchFinder::MatchResult &Result)
override;
> +};
> +
> +} // namespace misra
> +} // namespace tidy
> +} // namespace clang
> +
> +#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
> diff --git a/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
b/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
> new file mode 100644
> index 00000000000..cb78fa7efe0
> --- /dev/null
> +++ b/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
> @@ -0,0 +1,46 @@
> +//===--- CERTTidyModule.cpp - clang-tidy
----------------------------------===//
> +//
> +// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
> +// See https://llvm.org/LICENSE.txt for license information.
> +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
> +//
>
+//===----------------------------------------------------------------------===//
> +
> +#include "../ClangTidy.h"
> +#include "../ClangTidyModule.h"
> +#include "../ClangTidyModuleRegistry.h"
> +#include "M011Check.h"
> +
> +
> +namespace clang {
> +namespace tidy {
> +namespace misra {
> +
> +class MISRAModule : public ClangTidyModule {
> +public:
> +  void addCheckFactories(ClangTidyCheckFactories &CheckFactories)
override {
> +    // C++ checkers
> +
> +    CheckFactories.registerCheck<M011Check>(
> +        "misra-m-0-1-1");
> +  }
> +
> +  ClangTidyOptions getModuleOptions() override {
> +    ClangTidyOptions Options;
> +    return Options;
> +  }
> +};
> +
> +} // namespace misra
> +
> +// Register the MiscTidyModule using this statically initialized variable.
> +static ClangTidyModuleRegistry::Add<misra::MISRAModule>
> +    X("misra-module",
> +      "Adds lint checks corresponding to CERT secure coding
guidelines.");
> +
> +// This anchor is used to force the linker to link in the generated object
file
> +// and thus register the CERTModule.
> +volatile int MISRAModuleAnchorSource = 0;
> +
> +} // namespace tidy
> +} // namespace clang
> diff --git a/clang-tools-extra/docs/clang-tidy/checks/list.rst
b/clang-tools-extra/docs/clang-tidy/checks/list.rst
> index 62bfd314920..144bd80eaab 100644
> --- a/clang-tools-extra/docs/clang-tidy/checks/list.rst
> +++ b/clang-tools-extra/docs/clang-tidy/checks/list.rst
> @@ -213,6 +213,7 @@ Clang-Tidy Checks
>     `misc-unused-alias-decls <misc-unused-alias-decls.html>`_,
"Yes"
>     `misc-unused-parameters <misc-unused-parameters.html>`_,
"Yes"
>     `misc-unused-using-decls <misc-unused-using-decls.html>`_,
"Yes"
> +   `misra-m-0-1-1 <misra-m-0-1-1.html>`_, "Yes"
>     `modernize-avoid-bind <modernize-avoid-bind.html>`_,
"Yes"
>     `modernize-avoid-c-arrays <modernize-avoid-c-arrays.html>`_,
>     `modernize-concat-nested-namespaces
<modernize-concat-nested-namespaces.html>`_, "Yes"
> diff --git a/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
b/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
> new file mode 100644
> index 00000000000..7fd1cefbca8
> --- /dev/null
> +++ b/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
> @@ -0,0 +1,6 @@
> +.. title:: clang-tidy - misra-m-0-1-1
> +
> +misra-m-0-1-1
> +============> +
> +FIXME: Describe what patterns does the check detect and why. Give
examples.
> diff --git a/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
b/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
> new file mode 100644
> index 00000000000..382524ac36b
> --- /dev/null
> +++ b/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
> @@ -0,0 +1,14 @@
> +// RUN: %check_clang_tidy %s misra-m-0-1-1 %t
> +
> +// FIXME: Add something that triggers the check here.
> +void f();
> +// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: function 'f' is
insufficiently awesome [misra-m-0-1-1]
> +
> +// FIXME: Verify the applied fix.
> +//   * Make the CHECK patterns specific enough and try to make verified
lines
> +//     unique to avoid incorrect matches.
> +//   * Use {{}} for regular expressions.
> +// CHECK-FIXES: {{^}}void awesome_f();{{$}}
> +
> +// FIXME: Add something that doesn't trigger the check here.
> +void awesome_f2();
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev

Hi, Roman,

	Thanks a lot, root cause should be like below. I am not familiar with this
linker magic, :(


> On Sep 27, 2020, at 4:57 PM, Roman Lebedev <lebedev.ri at gmail.com>
wrote:
> 
> See https://reviews.llvm.org/D36836 for modern example of minimal
scaffolding.
> 
> Roman
> 
> On Sun, Sep 27, 2020 at 11:39 AM zhaoyonggang via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>> 
>> Hi, all,
>> 
>>        I am planning to add clang-tidy checkers for my company. How to
add a new module for my company? Please help, thanks in advance.
>> 
>>        I try to copy files from cert module, and rename cert to Misra,
then add a rule named "m-0-1-1" by ./add_new_checker.py.
>> 
>>        then I run ninja check-clang-tool, but my case is failed due to
below error
>> 
>>        Running ['clang-tidy',
'/Users/zyg/Documents/workspace/llvm-project/llvm/cmake-build-debug/tools/clang/tools/extra/test/clang-tidy/checkers/Output/misra-m-0-1-1.cpp.tmp.cpp',
'-fix', '--checks=-*,misra-m-0-1-1',
'-format-style=none', '--', '-std=c++11',
'-nostdinc++']... clang-tidy failed: Error: no checks enabled. USAGE:
clang-tidy [options] <source0> [... <sourceN>]
>> 
>> 
>> 
>> Below is my diff
>> 
>> 
>> diff --git a/clang-tools-extra/clang-tidy/CMakeLists.txt
b/clang-tools-extra/clang-tidy/CMakeLists.txt
>> index ca7a5afed6b..ccb77ef6a62 100644
>> --- a/clang-tools-extra/clang-tidy/CMakeLists.txt
>> +++ b/clang-tools-extra/clang-tidy/CMakeLists.txt
>> @@ -64,6 +64,7 @@ add_subdirectory(linuxkernel)
>> add_subdirectory(llvm)
>> add_subdirectory(llvmlibc)
>> add_subdirectory(misc)
>> +add_subdirectory(misra)
>> add_subdirectory(modernize)
>> if(CLANG_TIDY_ENABLE_STATIC_ANALYZER)
>>   add_subdirectory(mpi)
>> @@ -90,6 +91,7 @@ set(ALL_CLANG_TIDY_CHECKS
>>   clangTidyLLVMModule
>>   clangTidyLLVMLibcModule
>>   clangTidyMiscModule
>> +  clangTidyMISRAModule
>>   clangTidyModernizeModule
>>   clangTidyObjCModule
>>   clangTidyOpenMPModule
>> diff --git a/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
b/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
>> new file mode 100644
>> index 00000000000..ca345a946c9
>> --- /dev/null
>> +++ b/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
>> @@ -0,0 +1,28 @@
>> +set(LLVM_LINK_COMPONENTS
>> +  support
>> +  FrontendOpenMP
>> +  )
>> +
>> +add_clang_library(clangTidyMISRAModule
>> +  M011Check.cpp
>> +  MISRATidyModule.cpp
>> +  LINK_LIBS
>> +  clangTidy
>> +  clangTidyBugproneModule
>> +  clangTidyGoogleModule
>> +  clangTidyMiscModule
>> +  clangTidyPerformanceModule
>> +  clangTidyReadabilityModule
>> +  clangTidyUtils
>> +
>> +  DEPENDS
>> +  omp_gen
>> +)
>> +
>> +clang_target_link_libraries(clangTidyMISRAModule
>> +  PRIVATE
>> +  clangAST
>> +  clangASTMatchers
>> +  clangBasic
>> +  clangLex
>> +  )
>> diff --git a/clang-tools-extra/clang-tidy/misra/M011Check.cpp
b/clang-tools-extra/clang-tidy/misra/M011Check.cpp
>> new file mode 100644
>> index 00000000000..ebc0ba3bbe0
>> --- /dev/null
>> +++ b/clang-tools-extra/clang-tidy/misra/M011Check.cpp
>> @@ -0,0 +1,37 @@
>> +//===--- M011Check.cpp - clang-tidy
---------------------------------------===//
>> +//
>> +// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
>> +// See https://llvm.org/LICENSE.txt for license information.
>> +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
>> +//
>>
+//===----------------------------------------------------------------------===//
>> +
>> +#include "M011Check.h"
>> +#include "clang/AST/ASTContext.h"
>> +#include "clang/ASTMatchers/ASTMatchFinder.h"
>> +
>> +using namespace clang::ast_matchers;
>> +
>> +namespace clang {
>> +namespace tidy {
>> +namespace misra {
>> +
>> +void M011Check::registerMatchers(MatchFinder *Finder) {
>> +  // FIXME: Add matchers.
>> +  Finder->addMatcher(functionDecl().bind("x"), this);
>> +}
>> +
>> +void M011Check::check(const MatchFinder::MatchResult &Result) {
>> +  // FIXME: Add callback implementation.
>> +  const auto *MatchedDecl =
Result.Nodes.getNodeAs<FunctionDecl>("x");
>> +  if (!MatchedDecl->getIdentifier() ||
MatchedDecl->getName().startswith("awesome_"))
>> +    return;
>> +  diag(MatchedDecl->getLocation(), "function %0 is
insufficiently awesome")
>> +      << MatchedDecl;
>> +  diag(MatchedDecl->getLocation(), "insert
'awesome'", DiagnosticIDs::Note)
>> +      <<
FixItHint::CreateInsertion(MatchedDecl->getLocation(), "awesome_");
>> +}
>> +
>> +} // namespace misra
>> +} // namespace tidy
>> +} // namespace clang
>> diff --git a/clang-tools-extra/clang-tidy/misra/M011Check.h
b/clang-tools-extra/clang-tidy/misra/M011Check.h
>> new file mode 100644
>> index 00000000000..289d54545c7
>> --- /dev/null
>> +++ b/clang-tools-extra/clang-tidy/misra/M011Check.h
>> @@ -0,0 +1,34 @@
>> +//===--- M011Check.h - clang-tidy -------------------------------*-
C++ -*-===//
>> +//
>> +// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
>> +// See https://llvm.org/LICENSE.txt for license information.
>> +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
>> +//
>>
+//===----------------------------------------------------------------------===//
>> +
>> +#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
>> +#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
>> +
>> +#include "../ClangTidyCheck.h"
>> +
>> +namespace clang {
>> +namespace tidy {
>> +namespace misra {
>> +
>> +/// FIXME: Write a short description.
>> +///
>> +/// For the user-facing documentation see:
>> +/// http://clang.llvm.org/extra/clang-tidy/checks/misra-m-0-1-1.html
>> +class M011Check : public ClangTidyCheck {
>> +public:
>> +  M011Check(StringRef Name, ClangTidyContext *Context)
>> +      : ClangTidyCheck(Name, Context) {}
>> +  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
>> +  void check(const ast_matchers::MatchFinder::MatchResult &Result)
override;
>> +};
>> +
>> +} // namespace misra
>> +} // namespace tidy
>> +} // namespace clang
>> +
>> +#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
>> diff --git a/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
b/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
>> new file mode 100644
>> index 00000000000..cb78fa7efe0
>> --- /dev/null
>> +++ b/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
>> @@ -0,0 +1,46 @@
>> +//===--- CERTTidyModule.cpp - clang-tidy
----------------------------------===//
>> +//
>> +// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
>> +// See https://llvm.org/LICENSE.txt for license information.
>> +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
>> +//
>>
+//===----------------------------------------------------------------------===//
>> +
>> +#include "../ClangTidy.h"
>> +#include "../ClangTidyModule.h"
>> +#include "../ClangTidyModuleRegistry.h"
>> +#include "M011Check.h"
>> +
>> +
>> +namespace clang {
>> +namespace tidy {
>> +namespace misra {
>> +
>> +class MISRAModule : public ClangTidyModule {
>> +public:
>> +  void addCheckFactories(ClangTidyCheckFactories &CheckFactories)
override {
>> +    // C++ checkers
>> +
>> +    CheckFactories.registerCheck<M011Check>(
>> +        "misra-m-0-1-1");
>> +  }
>> +
>> +  ClangTidyOptions getModuleOptions() override {
>> +    ClangTidyOptions Options;
>> +    return Options;
>> +  }
>> +};
>> +
>> +} // namespace misra
>> +
>> +// Register the MiscTidyModule using this statically initialized
variable.
>> +static ClangTidyModuleRegistry::Add<misra::MISRAModule>
>> +    X("misra-module",
>> +      "Adds lint checks corresponding to CERT secure coding
guidelines.");
>> +
>> +// This anchor is used to force the linker to link in the generated
object file
>> +// and thus register the CERTModule.
>> +volatile int MISRAModuleAnchorSource = 0;
>> +
>> +} // namespace tidy
>> +} // namespace clang
>> diff --git a/clang-tools-extra/docs/clang-tidy/checks/list.rst
b/clang-tools-extra/docs/clang-tidy/checks/list.rst
>> index 62bfd314920..144bd80eaab 100644
>> --- a/clang-tools-extra/docs/clang-tidy/checks/list.rst
>> +++ b/clang-tools-extra/docs/clang-tidy/checks/list.rst
>> @@ -213,6 +213,7 @@ Clang-Tidy Checks
>>    `misc-unused-alias-decls <misc-unused-alias-decls.html>`_,
"Yes"
>>    `misc-unused-parameters <misc-unused-parameters.html>`_,
"Yes"
>>    `misc-unused-using-decls <misc-unused-using-decls.html>`_,
"Yes"
>> +   `misra-m-0-1-1 <misra-m-0-1-1.html>`_, "Yes"
>>    `modernize-avoid-bind <modernize-avoid-bind.html>`_,
"Yes"
>>    `modernize-avoid-c-arrays <modernize-avoid-c-arrays.html>`_,
>>    `modernize-concat-nested-namespaces
<modernize-concat-nested-namespaces.html>`_, "Yes"
>> diff --git a/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
b/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
>> new file mode 100644
>> index 00000000000..7fd1cefbca8
>> --- /dev/null
>> +++ b/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
>> @@ -0,0 +1,6 @@
>> +.. title:: clang-tidy - misra-m-0-1-1
>> +
>> +misra-m-0-1-1
>> +============>> +
>> +FIXME: Describe what patterns does the check detect and why. Give
examples.
>> diff --git
a/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
b/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
>> new file mode 100644
>> index 00000000000..382524ac36b
>> --- /dev/null
>> +++ b/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
>> @@ -0,0 +1,14 @@
>> +// RUN: %check_clang_tidy %s misra-m-0-1-1 %t
>> +
>> +// FIXME: Add something that triggers the check here.
>> +void f();
>> +// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: function 'f' is
insufficiently awesome [misra-m-0-1-1]
>> +
>> +// FIXME: Verify the applied fix.
>> +//   * Make the CHECK patterns specific enough and try to make
verified lines
>> +//     unique to avoid incorrect matches.
>> +//   * Use {{}} for regular expressions.
>> +// CHECK-FIXES: {{^}}void awesome_f();{{$}}
>> +
>> +// FIXME: Add something that doesn't trigger the check here.
>> +void awesome_f2();
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
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Hi, Roman,

	Thanks a lot, I have resolved this issue. 

	
diff --git a/clang-tools-extra/clang-tidy/ClangTidyForceLinker.h
b/clang-tools-extra/clang-tidy/ClangTidyForceLinker.h
index 3a5330c85c3..d9a5b486d6e 100644
--- a/clang-tools-extra/clang-tidy/ClangTidyForceLinker.h
+++ b/clang-tools-extra/clang-tidy/ClangTidyForceLinker.h
@@ -90,6 +90,11 @@ extern volatile int MiscModuleAnchorSource;
 static int LLVM_ATTRIBUTE_UNUSED MiscModuleAnchorDestination     
MiscModuleAnchorSource;

+// This anchor is used to force the linker to link the MISRAModule.
+extern volatile int MISRAModuleAnchorSource;
+static int LLVM_ATTRIBUTE_UNUSED MISRAModuleAnchorDestination +   
MISRAModuleAnchorSource;
+
 // This anchor is used to force the linker to link the ModernizeModule.
 extern volatile int ModernizeModuleAnchorSource;
 static int LLVM_ATTRIBUTE_UNUSED ModernizeModuleAnchorDestination 
> On Sep 27, 2020, at 4:57 PM, Roman Lebedev <lebedev.ri at gmail.com>
wrote:
> 
> See https://reviews.llvm.org/D36836 for modern example of minimal
scaffolding.
> 
> Roman
> 
> On Sun, Sep 27, 2020 at 11:39 AM zhaoyonggang via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>> 
>> Hi, all,
>> 
>>        I am planning to add clang-tidy checkers for my company. How to
add a new module for my company? Please help, thanks in advance.
>> 
>>        I try to copy files from cert module, and rename cert to Misra,
then add a rule named "m-0-1-1" by ./add_new_checker.py.
>> 
>>        then I run ninja check-clang-tool, but my case is failed due to
below error
>> 
>>        Running ['clang-tidy',
'/Users/zyg/Documents/workspace/llvm-project/llvm/cmake-build-debug/tools/clang/tools/extra/test/clang-tidy/checkers/Output/misra-m-0-1-1.cpp.tmp.cpp',
'-fix', '--checks=-*,misra-m-0-1-1',
'-format-style=none', '--', '-std=c++11',
'-nostdinc++']... clang-tidy failed: Error: no checks enabled. USAGE:
clang-tidy [options] <source0> [... <sourceN>]
>> 
>> 
>> 
>> Below is my diff
>> 
>> 
>> diff --git a/clang-tools-extra/clang-tidy/CMakeLists.txt
b/clang-tools-extra/clang-tidy/CMakeLists.txt
>> index ca7a5afed6b..ccb77ef6a62 100644
>> --- a/clang-tools-extra/clang-tidy/CMakeLists.txt
>> +++ b/clang-tools-extra/clang-tidy/CMakeLists.txt
>> @@ -64,6 +64,7 @@ add_subdirectory(linuxkernel)
>> add_subdirectory(llvm)
>> add_subdirectory(llvmlibc)
>> add_subdirectory(misc)
>> +add_subdirectory(misra)
>> add_subdirectory(modernize)
>> if(CLANG_TIDY_ENABLE_STATIC_ANALYZER)
>>   add_subdirectory(mpi)
>> @@ -90,6 +91,7 @@ set(ALL_CLANG_TIDY_CHECKS
>>   clangTidyLLVMModule
>>   clangTidyLLVMLibcModule
>>   clangTidyMiscModule
>> +  clangTidyMISRAModule
>>   clangTidyModernizeModule
>>   clangTidyObjCModule
>>   clangTidyOpenMPModule
>> diff --git a/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
b/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
>> new file mode 100644
>> index 00000000000..ca345a946c9
>> --- /dev/null
>> +++ b/clang-tools-extra/clang-tidy/misra/CMakeLists.txt
>> @@ -0,0 +1,28 @@
>> +set(LLVM_LINK_COMPONENTS
>> +  support
>> +  FrontendOpenMP
>> +  )
>> +
>> +add_clang_library(clangTidyMISRAModule
>> +  M011Check.cpp
>> +  MISRATidyModule.cpp
>> +  LINK_LIBS
>> +  clangTidy
>> +  clangTidyBugproneModule
>> +  clangTidyGoogleModule
>> +  clangTidyMiscModule
>> +  clangTidyPerformanceModule
>> +  clangTidyReadabilityModule
>> +  clangTidyUtils
>> +
>> +  DEPENDS
>> +  omp_gen
>> +)
>> +
>> +clang_target_link_libraries(clangTidyMISRAModule
>> +  PRIVATE
>> +  clangAST
>> +  clangASTMatchers
>> +  clangBasic
>> +  clangLex
>> +  )
>> diff --git a/clang-tools-extra/clang-tidy/misra/M011Check.cpp
b/clang-tools-extra/clang-tidy/misra/M011Check.cpp
>> new file mode 100644
>> index 00000000000..ebc0ba3bbe0
>> --- /dev/null
>> +++ b/clang-tools-extra/clang-tidy/misra/M011Check.cpp
>> @@ -0,0 +1,37 @@
>> +//===--- M011Check.cpp - clang-tidy
---------------------------------------===//
>> +//
>> +// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
>> +// See https://llvm.org/LICENSE.txt for license information.
>> +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
>> +//
>>
+//===----------------------------------------------------------------------===//
>> +
>> +#include "M011Check.h"
>> +#include "clang/AST/ASTContext.h"
>> +#include "clang/ASTMatchers/ASTMatchFinder.h"
>> +
>> +using namespace clang::ast_matchers;
>> +
>> +namespace clang {
>> +namespace tidy {
>> +namespace misra {
>> +
>> +void M011Check::registerMatchers(MatchFinder *Finder) {
>> +  // FIXME: Add matchers.
>> +  Finder->addMatcher(functionDecl().bind("x"), this);
>> +}
>> +
>> +void M011Check::check(const MatchFinder::MatchResult &Result) {
>> +  // FIXME: Add callback implementation.
>> +  const auto *MatchedDecl =
Result.Nodes.getNodeAs<FunctionDecl>("x");
>> +  if (!MatchedDecl->getIdentifier() ||
MatchedDecl->getName().startswith("awesome_"))
>> +    return;
>> +  diag(MatchedDecl->getLocation(), "function %0 is
insufficiently awesome")
>> +      << MatchedDecl;
>> +  diag(MatchedDecl->getLocation(), "insert
'awesome'", DiagnosticIDs::Note)
>> +      <<
FixItHint::CreateInsertion(MatchedDecl->getLocation(), "awesome_");
>> +}
>> +
>> +} // namespace misra
>> +} // namespace tidy
>> +} // namespace clang
>> diff --git a/clang-tools-extra/clang-tidy/misra/M011Check.h
b/clang-tools-extra/clang-tidy/misra/M011Check.h
>> new file mode 100644
>> index 00000000000..289d54545c7
>> --- /dev/null
>> +++ b/clang-tools-extra/clang-tidy/misra/M011Check.h
>> @@ -0,0 +1,34 @@
>> +//===--- M011Check.h - clang-tidy -------------------------------*-
C++ -*-===//
>> +//
>> +// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
>> +// See https://llvm.org/LICENSE.txt for license information.
>> +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
>> +//
>>
+//===----------------------------------------------------------------------===//
>> +
>> +#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
>> +#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
>> +
>> +#include "../ClangTidyCheck.h"
>> +
>> +namespace clang {
>> +namespace tidy {
>> +namespace misra {
>> +
>> +/// FIXME: Write a short description.
>> +///
>> +/// For the user-facing documentation see:
>> +/// http://clang.llvm.org/extra/clang-tidy/checks/misra-m-0-1-1.html
>> +class M011Check : public ClangTidyCheck {
>> +public:
>> +  M011Check(StringRef Name, ClangTidyContext *Context)
>> +      : ClangTidyCheck(Name, Context) {}
>> +  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
>> +  void check(const ast_matchers::MatchFinder::MatchResult &Result)
override;
>> +};
>> +
>> +} // namespace misra
>> +} // namespace tidy
>> +} // namespace clang
>> +
>> +#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISRA_M011CHECK_H
>> diff --git a/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
b/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
>> new file mode 100644
>> index 00000000000..cb78fa7efe0
>> --- /dev/null
>> +++ b/clang-tools-extra/clang-tidy/misra/MISRATidyModule.cpp
>> @@ -0,0 +1,46 @@
>> +//===--- CERTTidyModule.cpp - clang-tidy
----------------------------------===//
>> +//
>> +// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
>> +// See https://llvm.org/LICENSE.txt for license information.
>> +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
>> +//
>>
+//===----------------------------------------------------------------------===//
>> +
>> +#include "../ClangTidy.h"
>> +#include "../ClangTidyModule.h"
>> +#include "../ClangTidyModuleRegistry.h"
>> +#include "M011Check.h"
>> +
>> +
>> +namespace clang {
>> +namespace tidy {
>> +namespace misra {
>> +
>> +class MISRAModule : public ClangTidyModule {
>> +public:
>> +  void addCheckFactories(ClangTidyCheckFactories &CheckFactories)
override {
>> +    // C++ checkers
>> +
>> +    CheckFactories.registerCheck<M011Check>(
>> +        "misra-m-0-1-1");
>> +  }
>> +
>> +  ClangTidyOptions getModuleOptions() override {
>> +    ClangTidyOptions Options;
>> +    return Options;
>> +  }
>> +};
>> +
>> +} // namespace misra
>> +
>> +// Register the MiscTidyModule using this statically initialized
variable.
>> +static ClangTidyModuleRegistry::Add<misra::MISRAModule>
>> +    X("misra-module",
>> +      "Adds lint checks corresponding to CERT secure coding
guidelines.");
>> +
>> +// This anchor is used to force the linker to link in the generated
object file
>> +// and thus register the CERTModule.
>> +volatile int MISRAModuleAnchorSource = 0;
>> +
>> +} // namespace tidy
>> +} // namespace clang
>> diff --git a/clang-tools-extra/docs/clang-tidy/checks/list.rst
b/clang-tools-extra/docs/clang-tidy/checks/list.rst
>> index 62bfd314920..144bd80eaab 100644
>> --- a/clang-tools-extra/docs/clang-tidy/checks/list.rst
>> +++ b/clang-tools-extra/docs/clang-tidy/checks/list.rst
>> @@ -213,6 +213,7 @@ Clang-Tidy Checks
>>    `misc-unused-alias-decls <misc-unused-alias-decls.html>`_,
"Yes"
>>    `misc-unused-parameters <misc-unused-parameters.html>`_,
"Yes"
>>    `misc-unused-using-decls <misc-unused-using-decls.html>`_,
"Yes"
>> +   `misra-m-0-1-1 <misra-m-0-1-1.html>`_, "Yes"
>>    `modernize-avoid-bind <modernize-avoid-bind.html>`_,
"Yes"
>>    `modernize-avoid-c-arrays <modernize-avoid-c-arrays.html>`_,
>>    `modernize-concat-nested-namespaces
<modernize-concat-nested-namespaces.html>`_, "Yes"
>> diff --git a/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
b/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
>> new file mode 100644
>> index 00000000000..7fd1cefbca8
>> --- /dev/null
>> +++ b/clang-tools-extra/docs/clang-tidy/checks/misra-m-0-1-1.rst
>> @@ -0,0 +1,6 @@
>> +.. title:: clang-tidy - misra-m-0-1-1
>> +
>> +misra-m-0-1-1
>> +============>> +
>> +FIXME: Describe what patterns does the check detect and why. Give
examples.
>> diff --git
a/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
b/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
>> new file mode 100644
>> index 00000000000..382524ac36b
>> --- /dev/null
>> +++ b/clang-tools-extra/test/clang-tidy/checkers/misra-m-0-1-1.cpp
>> @@ -0,0 +1,14 @@
>> +// RUN: %check_clang_tidy %s misra-m-0-1-1 %t
>> +
>> +// FIXME: Add something that triggers the check here.
>> +void f();
>> +// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: function 'f' is
insufficiently awesome [misra-m-0-1-1]
>> +
>> +// FIXME: Verify the applied fix.
>> +//   * Make the CHECK patterns specific enough and try to make
verified lines
>> +//     unique to avoid incorrect matches.
>> +//   * Use {{}} for regular expressions.
>> +// CHECK-FIXES: {{^}}void awesome_f();{{$}}
>> +
>> +// FIXME: Add something that doesn't trigger the check here.
>> +void awesome_f2();
>> _______________________________________________
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