prevent-use-of-evsig.patch

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diff --git a/ipc/chromium/src/third_party/libevent/signal.c b/ipc/chromium/src/third_party/libevent/signal.c

index 3f46295024e57..1eec621b48c6c 100644

--- a/ipc/chromium/src/third_party/libevent/signal.c

+++ b/ipc/chromium/src/third_party/libevent/signal.c

@@ -64,6 +64,8 @@

 #include "evmap-internal.h"

 #include "evthread-internal.h"

+#include "mozilla/Assertions.h"

/*

   signal.c

@@ -280,6 +282,8 @@ evsig_add(struct event_base *base, evutil_socket_t evsignal, short old, short ev

 	struct evsig_info *sig = &base->sig;

 	(void)p;

+	MOZ_CRASH("Don't use this; see bug 1616462");

 	EVUTIL_ASSERT(evsignal >= 0 && evsignal < NSIG);

 	/* catch signals if they happen quickly */