D46108.id141328.diff
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D46108.id141328.diff
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	diff --git a/lib/libc/stdlib/exit.c b/lib/libc/stdlib/exit.c
	--- a/lib/libc/stdlib/exit.c
	+++ b/lib/libc/stdlib/exit.c
	@@ -48,6 +48,8 @@
	*/
	int __isthreaded = 0;

	+static pthread_mutex_t exit_mutex = PTHREAD_MUTEX_INITIALIZER;
	+
	/*
	* Exit, flushing stdio buffers if necessary.
	*/
	@@ -59,6 +61,10 @@

	_thread_autoinit_dummy_decl = 1;

	+ /* Make exit(3) thread-safe */
	+ if (__isthreaded)
	+ _pthread_mutex_lock(&exit_mutex);
	+
	/*
	* We're dealing with cleaning up thread_local destructors in the case of
	* the process termination through main() exit.