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-rw-r--r--src/libmain/shared.cc9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/libmain/shared.cc b/src/libmain/shared.cc
index cd752f4678a0..0afddfb785dd 100644
--- a/src/libmain/shared.cc
+++ b/src/libmain/shared.cc
@@ -125,6 +125,15 @@ void initNix()
     act.sa_handler = sigHandler;
     if (sigaction(SIGUSR1, &act, 0)) throw SysError("handling SIGUSR1");
 
+#if __APPLE__
+    /* HACK: on darwin, we need can’t use sigprocmask with SIGWINCH.
+     * Instead, add a dummy sigaction handler, and signalHandlerThread
+     * can handle the rest. */
+    struct sigaction sa;
+    sa.sa_handler = sigHandler;
+    if (sigaction(SIGWINCH, &sa, 0)) throw SysError("handling SIGWINCH");
+#endif
+
     /* Register a SIGSEGV handler to detect stack overflows. */
     detectStackOverflow();