Test diff, please ignore. Trying for a third time!

[CJ-Johnson]

Summary

This is my third attempt at phabricator

[CJ-Johnson]

libc/docs/clang_tidy_checks.rst

19

Test comment, please ignore

[CJ-Johnson]

Amended commit??

[CJ-Johnson]

Now with code! Will it run the tests?

libc/docs/clang_tidy_checks.rst

 LLVM libc clang-tidy checks
 ===========================
 These are the clang-tidy checks designed to help enforce implementation
 standards.
 The configuration file is ``src/.clang-tidy``.
 
 restrict-system-libc-header
 ---------------------------
 One of libc-project’s design goals is to use kernel headers and compiler
 provided headers to prevent code duplication on a per platform basis. This
 presents a problem when writing implementations since system libc headers are
 easy to include accidentally and we can't just use the ``-nostdinc`` flag.
 Improperly included system headers can introduce runtime errors because the C
 standard outlines function prototypes and behaviors but doesn’t define
 underlying implementation details such as the layout of a struct.
 
-This check prevents accidental inclusion of system libc headers when writing a
-libc implementation.
+Extra
+
+To
+
+Visualize
+
+This check prevents accidental inclusion of system libc headers when writing an
+llvm-libc implementation.
 
 .. code-block:: c++
 
    #include <stdio.h>            // Not allowed because it is part of system libc.
    #include <stddef.h>           // Allowed because it is provided by the compiler.
    #include "internal/stdio.h"   // Allowed because it is NOT part of system libc.
 
 

 LLVM-libc is distinct because it is designed to maintain interoperability with
 other libc libraries, including the one that lives on the system. This feature
 creates some uncertainty about which library a call resolves to especially when
 a public header with non-namespaced functions like ``string.h`` is included.
 
 This check ensures any function call resolves to a function within the
 __llvm_libc namespace.
 
+To
+
 .. code-block:: c++
 
     namespace __llvm_libc {
 
     // Allow calls with the fully qualified name.
     __llvm_libc::strlen("hello");
 
     // Allow calls to compiler provided functions.

libc/src/ctype/isascii.h

 //===-- Implementation header for isascii -------------------------*-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_LIBC_SRC_CTYPE_ISASCII_H
 #define LLVM_LIBC_SRC_CTYPE_ISASCII_H
 
 #undef isascii
 
 namespace __llvm_libc {
 
-int isascii(int c);
+int isascii(int);
 
 } // namespace __llvm_libc
 
 #endif //  LLVM_LIBC_SRC_CTYPE_ISASCII_H