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-rw-r--r--thread_win32.h7
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;