[hurd,commited 1/3] hurd: fix usleep(ULONG_MAX)

Samuel Thibault samuel.thibault@ens-lyon.org
Mon Jun 29 00:32:16 GMT 2020


* sysdeps/mach/usleep.c (usleep): Clamp timeout when rouding up.
---
 sysdeps/mach/usleep.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sysdeps/mach/usleep.c b/sysdeps/mach/usleep.c
index 530336ba0b..d53eb04a51 100644
--- a/sysdeps/mach/usleep.c
+++ b/sysdeps/mach/usleep.c
@@ -25,11 +25,15 @@ int
 usleep (useconds_t useconds)
 {
   mach_port_t recv;
+  useconds_t useconds_up = useconds + 999;
+
+  if (useconds_up < useconds)
+    useconds_up = UINT32_MAX;
 
   recv = __mach_reply_port ();
 
   (void) __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
-		     0, 0, recv, (useconds + 999) / 1000, MACH_PORT_NULL);
+		     0, 0, recv, useconds_up / 1000, MACH_PORT_NULL);
   __mach_port_destroy (mach_task_self (), recv);
 
   return 0;
-- 
2.27.0



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