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-rw-r--r--unix/tclUnixNotfy.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/unix/tclUnixNotfy.c b/unix/tclUnixNotfy.c
index 8395a5a..6b1ec3d 100644
--- a/unix/tclUnixNotfy.c
+++ b/unix/tclUnixNotfy.c
@@ -121,7 +121,7 @@ Tcl_AlertNotifier(
pthread_mutex_unlock(&notifierMutex);
#endif /* TCL_THREADS */
#else /* !NOTIFIER_SELECT */
- ThreadSpecificData *tsdPtr = clientData;
+ ThreadSpecificData *tsdPtr = (ThreadSpecificData *)clientData;
#if defined(NOTIFIER_EPOLL) && defined(HAVE_EVENTFD)
uint64_t eventFdVal = 1;
if (write(tsdPtr->triggerEventFd, &eventFdVal,