* ruby_atomic.h (ATOMIC_SIZE_CAS): fix compile error on Solaris since r43460.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43677 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/ruby_atomic.h b/ruby_atomic.h
index 9a9a148d7e..7e16d287f8 100644
--- a/ruby_atomic.h
+++ b/ruby_atomic.h
@@ -91,7 +91,7 @@ typedef unsigned int rb_atomic_t;
 #  define ATOMIC_SIZE_INC(var) atomic_inc_ulong(&(var))
 #  define ATOMIC_SIZE_DEC(var) atomic_dec_ulong(&(var))
 #  define ATOMIC_SIZE_EXCHANGE(var, val) atomic_swap_ulong(&(var), (val))
-#  define ATOMIC_SIZE_CAS(var, oldval, val) atomic_cas_ulong(&(var), (val))
+#  define ATOMIC_SIZE_CAS(var, oldval, val) atomic_cas_ulong(&(var), (oldval), (val))
 # else
 #  define ATOMIC_SIZE_ADD(var, val) atomic_add_int(&(var), (val))
 #  define ATOMIC_SIZE_SUB(var, val) atomic_add_int(&(var), -(val))