nobu	2015-06-21 18:32:40 +0900 (Sun, 21 Jun 2015)

  New Revision: 50984

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=50984

  Log:
    ruby_atomic.h: refine ATOMIC_PTR_CAS
    
    * ruby_atomic.h (ATOMIC_PTR_CAS): define by generic CAS macro, not
      via size_t, to suppress a warning by mingw gcc.

  Modified files:
    trunk/ChangeLog
    trunk/ruby_atomic.h
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 50983)
+++ ChangeLog	(revision 50984)
@@ -1,3 +1,8 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Sun Jun 21 18:32:37 2015  Nobuyoshi Nakada  <nobu@r...>
+
+	* ruby_atomic.h (ATOMIC_PTR_CAS): define by generic CAS macro, not
+	  via size_t, to suppress a warning by mingw gcc.
+
 Sun Jun 21 05:31:41 2015  Shota Fukumori  <her@s...>
 
 	* ext/objspace/objspace_dump.c(dump_object): Return empty JSON object when
Index: ruby_atomic.h
===================================================================
--- ruby_atomic.h	(revision 50983)
+++ ruby_atomic.h	(revision 50984)
@@ -18,6 +18,7 @@ typedef unsigned int rb_atomic_t; https://github.com/ruby/ruby/blob/trunk/ruby_atomic.h#L18
 # define ATOMIC_SIZE_SUB(var, val) __atomic_fetch_sub(&(var), (val), __ATOMIC_SEQ_CST)
 
 # define ATOMIC_PTR_EXCHANGE(var, val) __atomic_exchange_n(&(var), (val), __ATOMIC_SEQ_CST)
+# define ATOMIC_PTR_CAS(var, oldval, newval) ATOMIC_CAS(var, oldval, newval)
 
 #elif defined HAVE_GCC_SYNC_BUILTINS
 /* @shyouhei hack to support atomic operations in case of gcc. Gcc
@@ -36,6 +37,7 @@ typedef unsigned int rb_atomic_t; /* Any https://github.com/ruby/ruby/blob/trunk/ruby_atomic.h#L37
 # define ATOMIC_SIZE_SUB(var, val) __sync_fetch_and_sub(&(var), (val))
 
 # define ATOMIC_PTR_EXCHANGE(var, val) __sync_lock_test_and_set(&(var), (val))
+# define ATOMIC_PTR_CAS(var, oldval, newval) ATOMIC_CAS(var, oldval, newval)
 
 #elif defined _WIN32
 #if defined _MSC_VER && _MSC_VER > 1200

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