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Diffstat (limited to 'include/ruby/backward/2/long_long.h')
| -rw-r--r-- | include/ruby/backward/2/long_long.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/ruby/backward/2/long_long.h b/include/ruby/backward/2/long_long.h new file mode 100644 index 0000000000..8669d42cd6 --- /dev/null +++ b/include/ruby/backward/2/long_long.h @@ -0,0 +1,64 @@ +/** \noop-*-C++-*-vi:ft=cpp + * @file + * @author Ruby developers <ruby-core@ruby-lang.org> + * @copyright This file is a part of the programming language Ruby. + * Permission is hereby granted, to either redistribute and/or + * modify this file, provided that the conditions mentioned in the + * file COPYING are met. Consult the file for details. + * @warning Symbols prefixed with either `RUBY3` or `ruby3` are + * implementation details. Don't take them as canon. They could + * rapidly appear then vanish. The name (path) of this header file + * is also an implementation detail. Do not expect it to persist + * at the place it is now. Developers are free to move it anywhere + * anytime at will. + * @note To ruby-core: remember that this header can be possibly + * recursively included from extension libraries written in C++. + * Do not expect for instance `__VA_ARGS__` is always available. + * We assume C99 for ruby itself but we don't assume languages of + * extension libraries. They could be written in C++98. + * @brief Defines old #LONG_LONG + * + * No known compiler that can compile today's ruby lacks long long. + * Historically MSVC was one of such compiler, but it implemented long long a + * while ago (some time back in 2013). The macros are for backwards + * compatibility only. + */ +#include "ruby/3/config.h" +#include "ruby/3/has/warning.h" +#include "ruby/3/warning_push.h" + +#if defined(LONG_LONG) +# /* Take that. */ + +#elif RUBY3_HAS_WARNING("-Wc++11-long-long") +# define HAVE_TRUE_LONG_LONG 1 +# define LONG_LONG \ + RUBY3_WARNING_PUSH() \ + RUBY3_WARNING_IGNORED(-Wc++11-long-long) \ + long long \ + RUBY3_WARNING_POP() + +#elif RUBY3_HAS_WARNING("-Wlong-long") +# define HAVE_TRUE_LONG_LONG 1 +# define LONG_LONG \ + RUBY3_WARNING_PUSH() \ + RUBY3_WARNING_IGNORED(-Wlong-long) \ + long long \ + RUBY3_WARNING_POP() + +#elif defined(HAVE_LONG_LONG) +# define HAVE_TRUE_LONG_LONG 1 +# define LONG_LONG long long + +#elif SIZEOF___INT64 > 0 +# define HAVE_LONG_LONG 1 +# define LONG_LONG __int64 +# undef SIZEOF_LONG_LONG +# define SIZEOF_LONG_LONG SIZEOF___INT64 + +#else +# error Hello! Ruby developers believe this message must not happen. +# error If you encounter this message, can you file a bug report? +# error Remember to attach a detailed description of your environment. +# error Thank you! +#endif |