/* Compiler compatibility macros
- Copyright (C) 1991-2022 Free Software Foundation, Inc.
+ Copyright (C) 1991-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or modify
/* Attribute `warn_unused_result' was valid as of gcc 3.3. */
#ifndef ATTRIBUTE_WARN_UNUSED_RESULT
# if GCC_VERSION >= 3003
-# define ATTRIBUTE_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
+# define ATTRIBUTE_WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
# else
# define ATTRIBUTE_WARN_UNUSED_RESULT
# endif
#define CONSTEXPR
#endif
-/* C++11 adds the ability to add "override" after an implementation of a
- virtual function in a subclass, to:
- (A) document that this is an override of a virtual function
- (B) allow the compiler to issue a warning if it isn't (e.g. a mismatch
- of the type signature).
-
- Similarly, it allows us to add a "final" to indicate that no subclass
- may subsequently override the vfunc.
-
- Provide OVERRIDE and FINAL as macros, allowing us to get these benefits
- when compiling with C++11 support, but without requiring C++11.
-
- For gcc, use "-std=c++11" to enable C++11 support; gcc 6 onwards enables
- this by default (actually GNU++14). */
-
-#if defined __cplusplus
-# if __cplusplus >= 201103
- /* C++11 claims to be available: use it. Final/override were only
- implemented in 4.7, though. */
-# if GCC_VERSION < 4007
-# define OVERRIDE
-# define FINAL
-# else
-# define OVERRIDE override
-# define FINAL final
-# endif
-# elif GCC_VERSION >= 4007
- /* G++ 4.7 supports __final in C++98. */
-# define OVERRIDE
-# define FINAL __final
-# else
- /* No C++11 support; leave the macros empty. */
-# define OVERRIDE
-# define FINAL
-# endif
-#else
- /* No C++11 support; leave the macros empty. */
-# define OVERRIDE
-# define FINAL
-#endif
-
/* A macro to disable the copy constructor and assignment operator.
When building with C++11 and above, the methods are explicitly
deleted, causing a compile-time error if something tries to copy.