From beb0086f592563ddd2b14444d4e2495b17b1d4bf Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Thu, 6 Jun 2019 16:34:56 +0100
Subject: [PATCH] Avoid unnecessary inclusion of <stdexcept> header

This can greatly reduce the amount of preprocessed code that is included
by other headers, because <stdexcept> depends on <string> which is huge.

	* include/std/array: Do not include <stdexcept>.
	* include/std/optional: Include <exception> and
	<bits/exception_defines.h> instead of <stdexcept>.
	* testsuite/20_util/function_objects/searchers.cc: Include <cctype>
	for std::isalnum.
	* testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
	std::allocator.
	* testsuite/23_containers/map/erasure.cc: Include <string>.
	* testsuite/23_containers/unordered_map/erasure.cc: Likewise.

From-SVN: r272011
---
 libstdc++-v3/ChangeLog                                 | 10 ++++++++++
 libstdc++-v3/include/std/array                         |  2 +-
 libstdc++-v3/include/std/optional                      |  4 ++--
 .../testsuite/20_util/function_objects/searchers.cc    |  1 +
 libstdc++-v3/testsuite/20_util/tuple/cons/deduction.cc |  1 +
 libstdc++-v3/testsuite/23_containers/map/erasure.cc    |  1 +
 .../testsuite/23_containers/unordered_map/erasure.cc   |  1 +
 7 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index f1294f0c058..39f8b0e3575 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,15 @@
 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
 
+	* include/std/array: Do not include <stdexcept>.
+	* include/std/optional: Include <exception> and
+	<bits/exception_defines.h> instead of <stdexcept>.
+	* testsuite/20_util/function_objects/searchers.cc: Include <cctype>
+	for std::isalnum.
+	* testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
+	std::allocator.
+	* testsuite/23_containers/map/erasure.cc: Include <string>.
+	* testsuite/23_containers/unordered_map/erasure.cc: Likewise.
+
 	* testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
 	dg-prune-output for different C++98 diagnostic.
 	* testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
diff --git a/libstdc++-v3/include/std/array b/libstdc++-v3/include/std/array
index 02c6f4b4dbe..230e2b0f593 100644
--- a/libstdc++-v3/include/std/array
+++ b/libstdc++-v3/include/std/array
@@ -36,7 +36,7 @@
 #else
 
 #include <utility>
-#include <stdexcept>
+#include <bits/functexcept.h>
 #include <bits/stl_algobase.h>
 #include <bits/range_access.h>
 
diff --git a/libstdc++-v3/include/std/optional b/libstdc++-v3/include/std/optional
index ae825d3e327..79cd6c97019 100644
--- a/libstdc++-v3/include/std/optional
+++ b/libstdc++-v3/include/std/optional
@@ -35,10 +35,10 @@
 
 #include <utility>
 #include <type_traits>
-#include <stdexcept>
+#include <exception>
 #include <new>
 #include <initializer_list>
-#include <bits/functexcept.h>
+#include <bits/exception_defines.h>
 #include <bits/functional_hash.h>
 #include <bits/enable_special_members.h>
 
diff --git a/libstdc++-v3/testsuite/20_util/function_objects/searchers.cc b/libstdc++-v3/testsuite/20_util/function_objects/searchers.cc
index aae21d28d3a..fc278860f5c 100644
--- a/libstdc++-v3/testsuite/20_util/function_objects/searchers.cc
+++ b/libstdc++-v3/testsuite/20_util/function_objects/searchers.cc
@@ -19,6 +19,7 @@
 
 #include <functional>
 #include <cstring>
+#include <cctype>
 #ifdef _GLIBCXX_USE_WCHAR_T
 # include <cwchar>
 #endif
diff --git a/libstdc++-v3/testsuite/20_util/tuple/cons/deduction.cc b/libstdc++-v3/testsuite/20_util/tuple/cons/deduction.cc
index fa91f8fa539..eb3f2f3d6ab 100644
--- a/libstdc++-v3/testsuite/20_util/tuple/cons/deduction.cc
+++ b/libstdc++-v3/testsuite/20_util/tuple/cons/deduction.cc
@@ -19,6 +19,7 @@
 // <http://www.gnu.org/licenses/>.
 
 #include <tuple>
+#include <memory>
 
 template<typename T, typename U> struct require_same;
 template<typename T> struct require_same<T, T> { using type = void; };
diff --git a/libstdc++-v3/testsuite/23_containers/map/erasure.cc b/libstdc++-v3/testsuite/23_containers/map/erasure.cc
index d8a57160865..5b211c3602b 100644
--- a/libstdc++-v3/testsuite/23_containers/map/erasure.cc
+++ b/libstdc++-v3/testsuite/23_containers/map/erasure.cc
@@ -19,6 +19,7 @@
 // <http://www.gnu.org/licenses/>.
 
 #include <map>
+#include <string>
 #include <testsuite_hooks.h>
 
 #ifndef __cpp_lib_erase_if
diff --git a/libstdc++-v3/testsuite/23_containers/unordered_map/erasure.cc b/libstdc++-v3/testsuite/23_containers/unordered_map/erasure.cc
index 35190a0d19e..17bb940f00f 100644
--- a/libstdc++-v3/testsuite/23_containers/unordered_map/erasure.cc
+++ b/libstdc++-v3/testsuite/23_containers/unordered_map/erasure.cc
@@ -19,6 +19,7 @@
 // <http://www.gnu.org/licenses/>.
 
 #include <unordered_map>
+#include <string>
 #include <testsuite_hooks.h>
 
 #ifndef __cpp_lib_erase_if