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| author | Corinna Vinschen <corinna@vinschen.de> | 2019-07-12 17:18:48 +0200 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2019-07-12 17:27:26 +0200 |
| commit | bae987be12b12b18a4e7952a25dba2101f5da1d6 (patch) | |
| tree | 33959a920cbec9fd57d0170c64100e2972b4a4ce /winsup/cygwin | |
| parent | 948d40e4829e9a6895e6b831ebcb688af849fb90 (diff) | |
| download | newlib-bae987be12b12b18a4e7952a25dba2101f5da1d6.zip newlib-bae987be12b12b18a4e7952a25dba2101f5da1d6.tar.gz newlib-bae987be12b12b18a4e7952a25dba2101f5da1d6.tar.bz2 | |
Cygwin: sigpending: don't report pending signals for other threads
The sigpending mechanism failed to check if the pending signal was a
process-wide signal, or a signal for the curent thread. Fix that by
adding a matching conditional to wait_sig's __SIGPENDING code.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diffstat (limited to 'winsup/cygwin')
| -rw-r--r-- | winsup/cygwin/release/3.1.0 | 3 | ||||
| -rw-r--r-- | winsup/cygwin/sigproc.cc | 9 |
2 files changed, 10 insertions, 2 deletions
diff --git a/winsup/cygwin/release/3.1.0 b/winsup/cygwin/release/3.1.0 index c8fe555..3b73a18 100644 --- a/winsup/cygwin/release/3.1.0 +++ b/winsup/cygwin/release/3.1.0 @@ -37,3 +37,6 @@ Bug Fixes - Fix a timerfd deadlock. Addresses: https://cygwin.com/ml/cygwin/2019-06/msg00096.html + +- Fix sigpending() incorrectly returning signals for unrelated threads. + Addresses: https://cygwin.com/ml/cygwin/2019-07/msg00051.html diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc index cba1af7..900facd 100644 --- a/winsup/cygwin/sigproc.cc +++ b/winsup/cygwin/sigproc.cc @@ -1335,8 +1335,13 @@ wait_sig (VOID *) *pack.mask = 0; tl_entry = cygheap->find_tls (pack.sigtls); while ((q = q->next)) - if (pack.sigtls->sigmask & (bit = SIGTOMASK (q->si.si_signo))) - *pack.mask |= bit; + { + /* Skip thread-specific signals for other threads. */ + if (q->sigtls && pack.sigtls != q->sigtls) + continue; + if (pack.sigtls->sigmask & (bit = SIGTOMASK (q->si.si_signo))) + *pack.mask |= bit; + } cygheap->unlock_tls (tl_entry); } break; |