* ruby.h: use ifdef (or defined) for macro constants that may or

  may not be defined to shut up gcc's -Wundef warnings.
  [ruby-core:08447]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10648 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/eval.c b/eval.c
index 60d2b46a3c..d00891aa13 100644
--- a/eval.c
+++ b/eval.c
@@ -10296,7 +10296,7 @@ rb_thread_switch(n)
 
 NORETURN(static void rb_thread_restore_context _((rb_thread_t,int)));
 
-# if _MSC_VER >= 1300
+# if defined(_MSC_VER) && _MSC_VER >= 1300
 __declspec(noinline) static void stack_extend(rb_thread_t, int);
 # endif
 static void