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[Patch] libstdc++/28080 (partial)


Paolo Carlini wrote:

while working on something else, I noticed that by tweaking the codecvt_members.cc includes and consistently using __CHAR_BIT__ in stl_bvector.h too we can avoid including <climits> anywhere in the headers.

In fact, I have been able to beef up the patch to a decent improvement on libstdc++/28080: most of the times we can avoid including the big stl_algo.h because stl_algobase.h is enough. That is consistent with the original motivation of the split, I think. For example, for:


#include <string>

the preprocessed output goes from 482992 bytes to 361737 bytes.

Again, tested x86/x86-64, both locale models, also without PCHs.

Paolo.

///////////////
2007-02-18  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/28080 (partial)
	* include/bits/stl_algobase.h: Do not include <climits>, use
	std::numeric_limits.
	* include/bits/stl_bvector.h: Use __CHAR_BIT__.
	* config/locale/gnu/codecvt_members.cc: Include <climits>.
	* config/locale/generic/codecvt_members.cc: Likewise.
	* include/std/string: Do not include <algorithm>.
	* include/ext/vstring_util.h: Likewise.
	* include/tr1/hashtable_policy.h: Include <algorithm>.
	* testsuite/21_strings/basic_string/replace/char/1.cc: Likewise.
	* testsuite/21_strings/basic_string/replace/wchar_t/1.cc: Likewise.
	* testsuite/23_containers/bitset/cons/1.cc: Likewise.
	* testsuite/util/testsuite_character.h: Likewise.

	* config/locale/gnu/codecvt_members.cc: Also include <cstdlib>,
	for MB_CUR_MAX.
	* config/locale/generic/codecvt_members.cc: Likewise.
Index: include/ext/vstring_util.h
===================================================================
--- include/ext/vstring_util.h	(revision 122039)
+++ include/ext/vstring_util.h	(working copy)
@@ -43,7 +43,6 @@
 #include <bits/stl_function.h>  // For less
 #include <bits/functexcept.h>
 #include <locale>
-#include <algorithm> // For std::distance, srd::search.
 
 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
 
Index: include/bits/stl_algobase.h
===================================================================
--- include/bits/stl_algobase.h	(revision 122039)
+++ include/bits/stl_algobase.h	(working copy)
@@ -65,7 +65,6 @@
 #include <bits/c++config.h>
 #include <cstring>
 #include <cwchar>
-#include <climits>
 #include <cstdlib>
 #include <cstddef>
 #include <iosfwd>
@@ -318,8 +317,8 @@
 
   // Helpers for streambuf iterators (either istream or ostream).
   template<typename _CharT>
-  typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, 
-				  ostreambuf_iterator<_CharT> >::__type
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, 
+				    ostreambuf_iterator<_CharT> >::__type
     __copy_aux(_CharT*, _CharT*, ostreambuf_iterator<_CharT>);
 
   template<typename _CharT>
@@ -328,7 +327,8 @@
     __copy_aux(const _CharT*, const _CharT*, ostreambuf_iterator<_CharT>);
 
   template<typename _CharT>
-  typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, _CharT*>::__type
+    typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value,
+				    _CharT*>::__type
     __copy_aux(istreambuf_iterator<_CharT>, istreambuf_iterator<_CharT>,
 	       _CharT*);
 
@@ -979,17 +979,16 @@
     __glibcxx_requires_valid_range(__first1, __last1);
     __glibcxx_requires_valid_range(__first2, __last2);
 
-#if CHAR_MAX == SCHAR_MAX
-    return std::lexicographical_compare((const signed char*) __first1,
-					(const signed char*) __last1,
-					(const signed char*) __first2,
-					(const signed char*) __last2);
-#else /* CHAR_MAX == SCHAR_MAX */
-    return std::lexicographical_compare((const unsigned char*) __first1,
-					(const unsigned char*) __last1,
-					(const unsigned char*) __first2,
-					(const unsigned char*) __last2);
-#endif /* CHAR_MAX == SCHAR_MAX */
+    if (std::numeric_limits<char>::is_signed)
+      return std::lexicographical_compare((const signed char*) __first1,
+					  (const signed char*) __last1,
+					  (const signed char*) __first2,
+					  (const signed char*) __last2);
+    else
+      return std::lexicographical_compare((const unsigned char*) __first1,
+					  (const unsigned char*) __last1,
+					  (const unsigned char*) __first2,
+					  (const unsigned char*) __last2);
   }
 
 _GLIBCXX_END_NAMESPACE
Index: include/bits/stl_bvector.h
===================================================================
--- include/bits/stl_bvector.h	(revision 122039)
+++ include/bits/stl_bvector.h	(working copy)
@@ -1,6 +1,6 @@
 // vector<bool> specialization -*- C++ -*-
 
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
 // Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
@@ -65,7 +65,7 @@
 _GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD)
 
   typedef unsigned long _Bit_type;
-  enum { _S_word_bit = int(CHAR_BIT * sizeof(_Bit_type)) };
+  enum { _S_word_bit = int(__CHAR_BIT__ * sizeof(_Bit_type)) };
 
   struct _Bit_reference
   {
Index: include/tr1/hashtable_policy.h
===================================================================
--- include/tr1/hashtable_policy.h	(revision 122039)
+++ include/tr1/hashtable_policy.h	(working copy)
@@ -1,6 +1,6 @@
 // Internal policy header for TR1 unordered_set and unordered_map -*- C++ -*-
 
-// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+// Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -35,6 +35,7 @@
 #define _TR1_HASHTABLE_POLICY_H 1
 
 #include <functional> // _Identity, _Select1st
+#include <algorithm> // lower_bound
 #include <tr1/utility>
 #include <ext/type_traits.h>
 
Index: include/std/string
===================================================================
--- include/std/string	(revision 122039)
+++ include/std/string	(working copy)
@@ -1,6 +1,7 @@
 // Components for manipulating sequences of characters -*- C++ -*-
 
-// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+// 2005, 2006, 2007
 // Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
@@ -43,7 +44,7 @@
 
 #include <bits/c++config.h>
 #include <bits/stringfwd.h>
-#include <bits/char_traits.h>
+#include <bits/char_traits.h>  // NB: In turn includes stl_algobase.h
 #include <memory> 	// For allocator.
 #include <bits/cpp_type_traits.h>
 #include <iosfwd> 	// For operators >>, <<, and getline decls.
@@ -52,7 +53,6 @@
 #include <bits/basic_string.h>
 
 #ifndef _GLIBCXX_EXPORT_TEMPLATE
-# include <algorithm> // for find_if
 # include <bits/basic_string.tcc> 
 #endif
 
Index: testsuite/21_strings/basic_string/replace/wchar_t/1.cc
===================================================================
--- testsuite/21_strings/basic_string/replace/wchar_t/1.cc	(revision 122039)
+++ testsuite/21_strings/basic_string/replace/wchar_t/1.cc	(working copy)
@@ -1,6 +1,7 @@
 // 1999-06-10 bkoz
 
-// Copyright (C) 1994, 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
+// Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+// 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -21,6 +22,7 @@
 // 21.3.5.6 basic_string::replace
 
 #include <string>
+#include <algorithm> // for std::find
 #include <testsuite_hooks.h>
 
 bool test01(void)
Index: testsuite/21_strings/basic_string/replace/char/1.cc
===================================================================
--- testsuite/21_strings/basic_string/replace/char/1.cc	(revision 122039)
+++ testsuite/21_strings/basic_string/replace/char/1.cc	(working copy)
@@ -1,6 +1,7 @@
 // 1999-06-10 bkoz
 
-// Copyright (C) 1994, 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
+// Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+// 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -21,6 +22,7 @@
 // 21.3.5.6 basic_string::replace
 
 #include <string>
+#include <algorithm> // for std::find
 #include <testsuite_hooks.h>
 
 bool test01(void)
Index: testsuite/23_containers/bitset/cons/1.cc
===================================================================
--- testsuite/23_containers/bitset/cons/1.cc	(revision 122039)
+++ testsuite/23_containers/bitset/cons/1.cc	(working copy)
@@ -1,6 +1,7 @@
 // 1999-06-08 bkoz
 
-// Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+// Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -22,6 +23,7 @@
 
 #include <string>
 #include <bitset>
+#include <algorithm> // std::reverse
 #include <stdexcept>
 #include <testsuite_hooks.h>
 
Index: testsuite/util/testsuite_character.h
===================================================================
--- testsuite/util/testsuite_character.h	(revision 122039)
+++ testsuite/util/testsuite_character.h	(working copy)
@@ -3,7 +3,7 @@
 // Testing character type and state type with char_traits and codecvt
 // specializations for the C++ library testsuite.
 //
-// Copyright (C) 2003, 2005 Free Software Foundation, Inc.
+// Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -36,6 +36,7 @@
 #include <climits>
 #include <string> // for char_traits
 #include <locale> // for codecvt
+#include <algorithm> // for transform
 #include <ext/pod_char_traits.h>
 
 namespace __gnu_test
Index: config/locale/gnu/codecvt_members.cc
===================================================================
--- config/locale/gnu/codecvt_members.cc	(revision 122039)
+++ config/locale/gnu/codecvt_members.cc	(working copy)
@@ -1,6 +1,7 @@
 // std::codecvt implementation details, GNU version -*- C++ -*-
 
-// Copyright (C) 2002, 2003, 2005, 2006 Free Software Foundation, Inc.
+// Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
+// Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -34,6 +35,8 @@
 // Written by Benjamin Kosnik <bkoz@redhat.com>
 
 #include <locale>
+#include <cstdlib>  // For MB_CUR_MAX
+#include <climits>  // For MB_LEN_MAX
 #include <bits/c++locale_internal.h>
 
 _GLIBCXX_BEGIN_NAMESPACE(std)
Index: config/locale/generic/codecvt_members.cc
===================================================================
--- config/locale/generic/codecvt_members.cc	(revision 122039)
+++ config/locale/generic/codecvt_members.cc	(working copy)
@@ -1,6 +1,7 @@
 // std::codecvt implementation details, generic version -*- C++ -*-
 
-// Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+// Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
+// Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -34,6 +35,8 @@
 // Written by Benjamin Kosnik <bkoz@redhat.com>
 
 #include <locale>
+#include <cstdlib>  // For MB_CUR_MAX
+#include <climits>  // For MB_LEN_MAX
 
 _GLIBCXX_BEGIN_NAMESPACE(std)
 

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