From 9af65c2b9047168f14e623d55f87beda33ba1503 Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Tue, 6 Oct 2020 00:05:11 +0100
Subject: libstdc++: Reduce uses of std::numeric_limits

This avoids unnecessary instantiations of std::numeric_limits or
inclusion of <limits> when a more lightweight alternative would work.
Some uses can be replaced with __gnu_cxx::__int_traits and some can just
use size_t(-1) directly where SIZE_MAX is needed.

libstdc++-v3/ChangeLog:

	* include/bits/regex.h: Use __int_traits<int> instead of
	std::numeric_limits<int>.
	* include/bits/uniform_int_dist.h: Use __int_traits<T>::__max
	instead of std::numeric_limits<T>::max().
	* include/bits/hashtable_policy.h: Use size_t(-1) instead of
	std::numeric_limits<size_t>::max().
	* include/std/regex: Include <ext/numeric_traits.h>.
	* include/std/string_view: Use typedef for __int_traits<int>.
	* src/c++11/hashtable_c++0x.cc: Use size_t(-1) instead of
	std::numeric_limits<size_t>::max().
	* testsuite/std/ranges/iota/96042.cc: Include <limits>.
	* testsuite/std/ranges/iota/difference_type.cc: Likewise.
	* testsuite/std/ranges/subrange/96042.cc: Likewise.
---
 libstdc++-v3/include/std/regex | 1 +
 1 file changed, 1 insertion(+)

(limited to 'libstdc++-v3/include/std/regex')

diff --git a/libstdc++-v3/include/std/regex b/libstdc++-v3/include/std/regex
index b4b8ea7..43ee1ae 100644
--- a/libstdc++-v3/include/std/regex
+++ b/libstdc++-v3/include/std/regex
@@ -53,6 +53,7 @@
 #include <cstring>
 
 #include <ext/aligned_buffer.h>
+#include <ext/numeric_traits.h>
 #include <bits/std_function.h>
 #include <bits/regex_constants.h>
 #include <bits/regex_error.h>
-- 
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