Update prebuilt Clang to r416183b from Android.
https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef
clang 12.0.5 (based on r416183b) from build 7284624.
Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/include/clang-tidy/android/CloexecCheck.h b/linux-x64/clang/include/clang-tidy/android/CloexecCheck.h
new file mode 100644
index 0000000..336ed56
--- /dev/null
+++ b/linux-x64/clang/include/clang-tidy/android/CloexecCheck.h
@@ -0,0 +1,104 @@
+//===--- CloexecCheck.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
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file contains the declaration of the CloexecCheck class, which is the
+/// base class for all of the close-on-exec checks in Android module.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_H
+
+#include "../ClangTidyCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// The base class for all close-on-exec checks in Android module.
+/// To be specific, there are some functions that need the close-on-exec flag to
+/// prevent the file descriptor leakage on fork+exec and this class provides
+/// utilities to identify and fix these C functions.
+class CloexecCheck : public ClangTidyCheck {
+public:
+ CloexecCheck(StringRef Name, ClangTidyContext *Context)
+ : ClangTidyCheck(Name, Context) {}
+
+protected:
+ void
+ registerMatchersImpl(ast_matchers::MatchFinder *Finder,
+ ast_matchers::internal::Matcher<FunctionDecl> Function);
+
+ /// Currently, we have three types of fixes.
+ ///
+ /// Type1 is to insert the necessary macro flag in the flag argument. For
+ /// example, 'O_CLOEXEC' is required in function 'open()', so
+ /// \code
+ /// open(file, O_RDONLY);
+ /// \endcode
+ /// should be
+ /// \code
+ /// open(file, O_RDONLY | O_CLOEXE);
+ /// \endcode
+ ///
+ /// \param [out] Result MatchResult from AST matcher.
+ /// \param MacroFlag The macro name of the flag.
+ /// \param ArgPos The 0-based position of the flag argument.
+ void insertMacroFlag(const ast_matchers::MatchFinder::MatchResult &Result,
+ StringRef MacroFlag, int ArgPos);
+
+ /// Type2 is to replace the API to another function that has required the
+ /// ability. For example:
+ /// \code
+ /// creat(path, mode);
+ /// \endcode
+ /// should be
+ /// \code
+ /// open(path, O_CREAT | O_WRONLY | O_TRUNC | O_CLOEXEC, mode)
+ /// \endcode
+ ///
+ /// \param [out] Result MatchResult from AST matcher.
+ /// \param WarningMsg The warning message.
+ /// \param FixMsg The fix message.
+ void replaceFunc(const ast_matchers::MatchFinder::MatchResult &Result,
+ StringRef WarningMsg, StringRef FixMsg);
+
+ /// Type3 is also to add a flag to the corresponding argument, but this time,
+ /// the flag is some string and each char represents a mode rather than a
+ /// macro. For example, 'fopen' needs char 'e' in its mode argument string, so
+ /// \code
+ /// fopen(in_file, "r");
+ /// \endcode
+ /// should be
+ /// \code
+ /// fopen(in_file, "re");
+ /// \endcode
+ ///
+ /// \param [out] Result MatchResult from AST matcher.
+ /// \param Mode The required mode char.
+ /// \param ArgPos The 0-based position of the flag argument.
+ void insertStringFlag(const ast_matchers::MatchFinder::MatchResult &Result,
+ const char Mode, const int ArgPos);
+
+ /// Helper function to get the spelling of a particular argument.
+ StringRef getSpellingArg(const ast_matchers::MatchFinder::MatchResult &Result,
+ int N) const;
+
+ /// Binding name of the FuncDecl of a function call.
+ static const char *FuncDeclBindingStr;
+
+ /// Binding name of the function call expression.
+ static const char *FuncBindingStr;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_H