https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=aa9b5262f238d446260ec06d962f4c325a64dd89
commit aa9b5262f238d446260ec06d962f4c325a64dd89 Author: Takashi Yano <[email protected]> Date: Thu May 5 21:12:26 2022 +0900 Cygwin: sigproc: Avoid segfault caused by signal just after fork(). - The commit "Cygwin: always add sigmask to child info" also tries to fix this issue, however, did not fix enough. This patch fixes that. Diff: --- winsup/cygwin/sigproc.cc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc index 987dfea37..a70c3b6f6 100644 --- a/winsup/cygwin/sigproc.cc +++ b/winsup/cygwin/sigproc.cc @@ -1356,9 +1356,9 @@ wait_sig (VOID *) when _main_tls points to the system-allocated stack, not to the parent thread. In that case find_tls fails, and we fetch the sigmask from the child_info passed from the parent. */ - tl_entry = cygheap->find_tls (_main_tls); - if (tl_entry) + if (cygwin_finished_initializing) { + tl_entry = cygheap->find_tls (_main_tls); dummy_mask = _main_tls->sigmask; cygheap->unlock_tls (tl_entry); }
