thread_win32.h: rb_thread_lock_t for USE_WIN32_MUTEX

* thread_win32.h (rb_thread_lock_t): make a union for USE_WIN32_MUTEX.
  this internal is used only in thread_win32.c, but has to be complete
  to define rb_thread_t.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36119 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 1 deletions

diff --git a/thread_win32.h b/thread_win32.h
index 4098a42606..9c1c4674ef 100644
--- a/thread_win32.h
+++ b/thread_win32.h
@@ -22,7 +22,12 @@ WINBASEAPI BOOL WINAPI
 TryEnterCriticalSection(IN OUT LPCRITICAL_SECTION lpCriticalSection);
 
 typedef HANDLE rb_thread_id_t;
-typedef CRITICAL_SECTION rb_thread_lock_t;
+
+typedef union rb_thread_lock_union {
+    HANDLE mutex;
+    CRITICAL_SECTION crit;
+} rb_thread_lock_t;
+
 typedef struct rb_thread_cond_struct {
     struct cond_event_entry *next;
     struct cond_event_entry *prev;