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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.
This commit is contained in:
Takashi Yano 2022-05-05 21:12:26 +09:00
parent 323b61f271
commit aa9b5262f2
1 changed files with 2 additions and 2 deletions
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4
winsup/cygwin/sigproc.cc
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@ -1356,9 +1356,9 @@ wait_sig (VOID *)
when _main_tls points to the system-allocated stack, not to when _main_tls points to the system-allocated stack, not to
the parent thread. In that case find_tls fails, and we fetch the parent thread. In that case find_tls fails, and we fetch
the sigmask from the child_info passed from the parent. */ the sigmask from the child_info passed from the parent. */
tl_entry = cygheap->find_tls (_main_tls); if (cygwin_finished_initializing)
if (tl_entry)
{ {
tl_entry = cygheap->find_tls (_main_tls);
dummy_mask = _main_tls->sigmask; dummy_mask = _main_tls->sigmask;
cygheap->unlock_tls (tl_entry); cygheap->unlock_tls (tl_entry);
} }