[libc++] Move everything related solely to _LIBCPP_ASSERT to its own file
This is the first step towards disentangling the debug mode and assertions
in libc++. This patch doesn't make any functional change: it simply moves
_LIBCPP_ASSERT-related stuff to its own file so as to make it clear that
libc++ assertions and the debug mode are different things. Future patches
will make it possible to enable assertions without enabling the debug
mode.
Differential Revision: https://reviews.llvm.org/D119769
NOKEYCHECK=True
GitOrigin-RevId: f87aa19be64499308fc18f92d048c5fa2d3064d9
diff --git a/src/mutex.cpp b/src/mutex.cpp
index 9e780aa..01b7420 100644
--- a/src/mutex.cpp
+++ b/src/mutex.cpp
@@ -6,6 +6,7 @@
//
//===----------------------------------------------------------------------===//
+#include <__assert>
#include <limits>
#include <mutex>
#include <system_error>