From 99bf3a817b9d31905dd12448e853ad2685635250 Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Mon, 9 Nov 2020 10:09:51 +0000
Subject: [PATCH] libstdc++: Include <typeinfo> even for -fno-rtti [PR 97758]

The std::function code now uses std::type_info* even when RTTI is
disabled, so it should include <typeinfo> unconditionally. Without this,
Clang can't compile <functional> with -fno-rtti (it works with GCC
because std::type_info gets declared automatically by the compiler).

libstdc++-v3/ChangeLog:

	PR libstdc++/97758
	* include/bits/std_function.h [!__cpp_rtti]: Include <typeinfo>.
---
 libstdc++-v3/include/bits/std_function.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/libstdc++-v3/include/bits/std_function.h b/libstdc++-v3/include/bits/std_function.h
index 054d9cbbf02..1788b882a8a 100644
--- a/libstdc++-v3/include/bits/std_function.h
+++ b/libstdc++-v3/include/bits/std_function.h
@@ -36,9 +36,7 @@
 # include <bits/c++0x_warning.h>
 #else
 
-#if __cpp_rtti
-# include <typeinfo>
-#endif
+#include <typeinfo>
 #include <bits/stl_function.h>
 #include <bits/invoke.h>
 #include <bits/refwrap.h>