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-rw-r--r--winsup/cygwin/fork.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/winsup/cygwin/fork.cc b/winsup/cygwin/fork.cc
index b0248026b..f3b32b7f9 100644
--- a/winsup/cygwin/fork.cc
+++ b/winsup/cygwin/fork.cc
@@ -419,8 +419,9 @@ fork ()
child->process_state |= PID_INITIALIZING |
(myself->process_state & PID_USETTY);
memcpy (child->username, myself->username, MAX_USER_NAME);
- child->psid = myself->psid;
memcpy (child->sidbuf, myself->sidbuf, 40);
+ if (myself->psid)
+ child->psid = child->sidbuf;
memcpy (child->logsrv, myself->logsrv, 256);
memcpy (child->domain, myself->domain, MAX_COMPUTERNAME_LENGTH+1);
child->token = myself->token;