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-rw-r--r--unix/tclUnixNotfy.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/unix/tclUnixNotfy.c b/unix/tclUnixNotfy.c
index 7488cf1..118fa79 100644
--- a/unix/tclUnixNotfy.c
+++ b/unix/tclUnixNotfy.c
@@ -11,7 +11,7 @@
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclUnixNotfy.c,v 1.11.2.14 2005/11/27 02:34:42 das Exp $
+ * RCS: @(#) $Id: tclUnixNotfy.c,v 1.11.2.15 2006/08/21 01:08:10 das Exp $
*/
#include "tclInt.h"
@@ -715,6 +715,16 @@ Tcl_WaitForEvent(timePtr)
waitForFiles = (tsdPtr->numFdBits > 0);
if (timePtr != NULL && timePtr->sec == 0 && timePtr->usec == 0) {
+#if defined(__APPLE__) && defined(__LP64__)
+ /*
+ * On 64-bit Darwin, pthread_cond_timedwait() appears to have a bug
+ * that causes it to wait forever when passed an absolute time which
+ * has already been exceeded by the system time; as a workaround,
+ * when given a very brief timeout, just do a poll. [Bug 1457797]
+ */
+ || timePtr->usec < 10
+#endif
+ )) {
/*
* Cannot emulate a polling select with a polling condition variable.
* Instead, pretend to wait for files and tell the notifier