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* vm_core.h: use __has_attribute() instead of __clang__major__ because

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clang says "Note that marketing version numbers should not be used
  to check for language features, as different vendors use different
  numbering schemes. Instead, use the Feature Checking Macros."
  http://clang.llvm.org/docs/LanguageExtensions.html

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43116 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
naruse 2013-10-02 06:50:47 +00:00
parent c1c45c1cf7
commit d748f5b6eb
2 changed files with 13 additions and 1 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
Wed Oct 2 15:39:13 2013 NARUSE, Yui <naruse@ruby-lang.org>
* vm_core.h: use __has_attribute() instead of __clang__major__ because
clang says "Note that marketing version numbers should not be used
to check for language features, as different vendors use different
numbering schemes. Instead, use the Feature Checking Macros."
http://clang.llvm.org/docs/LanguageExtensions.html
Wed Oct 2 14:19:57 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* io.c (rb_io_close_write): detach tied IO for writing before closing

6
vm_core.h
View file

@ -109,7 +109,11 @@
#define UNLIKELY(x) (x)
#endif /* __GNUC__ >= 3 */
#if (defined(__clang__) && __clang_major__ >= 4)
#ifndef __has_attribute
# define __has_attribute(x) 0
#endif
#if __has_attribute(unused)
#define UNINITIALIZED_VAR(x) x __attribute__((unused))
#elif defined(__GNUC__) && __GNUC__ >= 3
#define UNINITIALIZED_VAR(x) x = x