[libc++] Ensure that all public C++ headers include <__assert>
This patch changes the requirement for getting the declaration of the
assertion handler from including <__assert> to including any public
C++ header of the library. Note that C compatibility headers are
excluded because we don't implement all the C headers ourselves --
some of them are taken straight from the C library, like assert.h.
It also adds a generated test to check it. Furthermore, this new
generated test is designed in a way that will make it possible to
replace almost all the existing test-generation scripts with this
system in upcoming patches.
Differential Revision: https://reviews.llvm.org/D122506
NOKEYCHECK=True
GitOrigin-RevId: 385cc25a531a72c393cee44689e2c3194615bcec
diff --git a/include/array b/include/array
index 0b36608..786dc75 100644
--- a/include/array
+++ b/include/array
@@ -112,7 +112,7 @@
#include <__algorithm/fill_n.h>
#include <__algorithm/lexicographical_compare.h>
#include <__algorithm/swap_ranges.h>
-#include <__assert>
+#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>
#include <__tuple>
#include <__utility/integer_sequence.h>