From 548a4c3ca43543e66ec91df799379bc67a92804a Mon Sep 17 00:00:00 2001 From: Corinna Vinschen Date: Fri, 30 Apr 2021 10:30:21 +0200 Subject: [PATCH] Cygwin: POSIX mq: avoid double calls to ipc_mutex_unlock _mq_send as well as _mq_receive call ipc_mutex_unlock twice in case of success, after having introduced __try/__except blocks. Fixes: 3f3bd10104550 ("* Throughout, use __try/__except/__endtry blocks, rather than myfault handler.") Signed-off-by: Corinna Vinschen --- winsup/cygwin/posix_ipc.cc | 3 --- 1 file changed, 3 deletions(-) diff --git a/winsup/cygwin/posix_ipc.cc b/winsup/cygwin/posix_ipc.cc index c6a003c37..89ec7dbef 100644 --- a/winsup/cygwin/posix_ipc.cc +++ b/winsup/cygwin/posix_ipc.cc @@ -886,7 +886,6 @@ _mq_send (mqd_t mqd, const char *ptr, size_t len, unsigned int prio, ipc_cond_signal (mqinfo->mqi_waitrecv); attr->mq_curmsgs++; - ipc_mutex_unlock (mqinfo->mqi_lock); ret = 0; } __except (EBADF) {} @@ -986,8 +985,6 @@ _mq_receive (mqd_t mqd, char *ptr, size_t maxlen, unsigned int *priop, if (attr->mq_curmsgs == attr->mq_maxmsg) ipc_cond_signal (mqinfo->mqi_waitsend); attr->mq_curmsgs--; - - ipc_mutex_unlock (mqinfo->mqi_lock); } __except (EBADF) {} __endtry -- 2.43.5