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-rw-r--r--hurd/debugging/rpctrace.mdwn3
1 files changed, 3 insertions, 0 deletions
diff --git a/hurd/debugging/rpctrace.mdwn b/hurd/debugging/rpctrace.mdwn
index c506861a..94dd946a 100644
--- a/hurd/debugging/rpctrace.mdwn
+++ b/hurd/debugging/rpctrace.mdwn
@@ -175,6 +175,9 @@ See `rpctrace --help` about how to use it.
/home/rbraun/hd0s7/hurd/hurd-20120710/./utils/rpctrace.c:1287:
trace_and_forward: Assertion `reply_type == 18' failed.
+This assertion is actually caused by using the io_select interface, which creates
+a send right instead of a send-once right for the reply port (IIRC).
+
# See Also