[libc++] Replace `#include ""` with `<>` in libcxx/src/. NFCI.
Our best guess is that the two syntaxes should have exactly equivalent
effects, so, let's be consistent with what we do in libcxx/include/.
I've left `#include "include/x.h"` and `#include "../y.h"` alone
because I'm less sure that they're interchangeable, and they aren't
inconsistent with libcxx/include/ because libcxx/include/ never
does that kind of thing.
Also, use the `_LIBCPP_PUSH_MACROS/POP_MACROS` dance for `<__undef_macros>`,
even though it's technically unnecessary in a standalone .cpp file,
just so we have consistently one way to do it.
Differential Revision: https://reviews.llvm.org/D119561
NOKEYCHECK=True
GitOrigin-RevId: bbb0f2c759a16f2fb4e1d74795b790cf0c170620
diff --git a/src/strstream.cpp b/src/strstream.cpp
index fe7e2d4..c3a7eb9 100644
--- a/src/strstream.cpp
+++ b/src/strstream.cpp
@@ -7,13 +7,15 @@
//===----------------------------------------------------------------------===//
#include <__utility/unreachable.h>
-#include "strstream"
-#include "algorithm"
-#include "climits"
-#include "cstring"
-#include "cstdlib"
-#include "__debug"
-#include "__undef_macros"
+#include <__debug>
+#include <algorithm>
+#include <climits>
+#include <cstdlib>
+#include <cstring>
+#include <strstream>
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
@@ -334,3 +336,5 @@
}
_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS