[newlib-cygwin] Cygwin: sigproc: Do not send signal to myself if exiting.
Takashi Yano
tyan0@sourceware.org
Fri Nov 19 17:40:08 GMT 2021
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=a92d69d7439de92974d733d402d34f6f11dafdcb
commit a92d69d7439de92974d733d402d34f6f11dafdcb
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Sat Nov 20 02:32:12 2021 +0900
Cygwin: sigproc: Do not send signal to myself if exiting.
- This patch fixes the issue that process sometimes hangs for 60
seconds with the following scenario.
1) Open command prompt.
2) Run "c:\cygwin64\bin\bash -l"
3) Compipe the following source with mingw compiler.
/*--- Begin ---*/
#include <stdio.h>
int main() {return getchar();}
/*---- End ----*/
4) Run "tcsh -c ./a.exe"
5) Hit Ctrl-C.
Diff:
---
winsup/cygwin/sigproc.cc | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc
index 97211edcf..2441efc92 100644
--- a/winsup/cygwin/sigproc.cc
+++ b/winsup/cygwin/sigproc.cc
@@ -603,6 +603,11 @@ sig_send (_pinfo *p, siginfo_t& si, _cygtls *tls)
its_me = false;
}
+ /* Do not send signal to myself if exiting, which will be
+ ignored in wait_sig thread. */
+ if (its_me && exit_state > ES_EXIT_STARTING && si.si_signo > 0)
+ goto out;
+
if (its_me)
sendsig = my_sendsig;
else
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