[PATCH] Cygwin: pty: Fix acquiring attach_mutex timing.
Takashi Yano
takashi.yano@nifty.ne.jp
Sun May 8 11:03:15 GMT 2022
- When temporarily attaching a console, the timing of acquiring
attach_mutex was not appropriate. This sometimes caused master
forwarding thread to crash on Ctrl-C in Windows 7. This patch
fixes the issue.
---
winsup/cygwin/fhandler_tty.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index 484bf55dc..bdde1dce6 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -4171,13 +4171,13 @@ DWORD
fhandler_pty_common::attach_console_temporarily (DWORD target_pid)
{
DWORD resume_pid = 0;
+ acquire_attach_mutex (mutex_timeout);
pinfo pinfo_resume (myself->ppid);
if (pinfo_resume)
resume_pid = pinfo_resume->dwProcessId;
if (!resume_pid)
resume_pid = get_console_process_id (myself->dwProcessId, false);
bool console_exists = fhandler_console::exists ();
- acquire_attach_mutex (mutex_timeout);
if (!console_exists || resume_pid)
{
FreeConsole ();
--
2.36.0
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