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Fix gcc bug 58800.

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See #2330 for details, except I needed to remove the Changelog change from the patch
This commit is contained in:
Shea Levy 2014-04-20 09:46:21 -04:00
parent 2364bd807d
commit 88e531d8dc
2 changed files with 80 additions and 1 deletions
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79
pkgs/development/compilers/gcc/4.8/bug-58800.patch Normal file
View File

@ -0,0 +1,79 @@
Index: gcc-4_8-branch/libstdc++-v3/include/bits/stl_algo.h
===================================================================
--- gcc-4_8-branch/libstdc++-v3/include/bits/stl_algo.h (revision 203872)
+++ gcc-4_8-branch/libstdc++-v3/include/bits/stl_algo.h (revision 203873)
@@ -2279,7 +2279,7 @@
_RandomAccessIterator __last)
{
_RandomAccessIterator __mid = __first + (__last - __first) / 2;
- std::__move_median_to_first(__first, __first + 1, __mid, (__last - 2));
+ std::__move_median_to_first(__first, __first + 1, __mid, __last - 1);
return std::__unguarded_partition(__first + 1, __last, *__first);
}
@@ -2291,7 +2291,7 @@
_RandomAccessIterator __last, _Compare __comp)
{
_RandomAccessIterator __mid = __first + (__last - __first) / 2;
- std::__move_median_to_first(__first, __first + 1, __mid, (__last - 2),
+ std::__move_median_to_first(__first, __first + 1, __mid, __last - 1,
__comp);
return std::__unguarded_partition(__first + 1, __last, *__first, __comp);
}
Index: gcc-4_8-branch/libstdc++-v3/testsuite/25_algorithms/nth_element/58800.cc
===================================================================
--- gcc-4_8-branch/libstdc++-v3/testsuite/25_algorithms/nth_element/58800.cc (revision 0)
+++ gcc-4_8-branch/libstdc++-v3/testsuite/25_algorithms/nth_element/58800.cc (revision 203873)
@@ -0,0 +1,52 @@
+// Copyright (C) 2013 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
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 25.3.2 [lib.alg.nth.element]
+
+// { dg-options "-std=gnu++11" }
+
+#include <algorithm>
+#include <testsuite_hooks.h>
+#include <testsuite_iterators.h>
+
+using __gnu_test::test_container;
+using __gnu_test::random_access_iterator_wrapper;
+
+typedef test_container<int, random_access_iterator_wrapper> Container;
+
+void test01()
+{
+ std::vector<int> v = {
+ 207089,
+ 202585,
+ 180067,
+ 157549,
+ 211592,
+ 216096,
+ 207089
+ };
+
+ Container con(v.data(), v.data() + 7);
+
+ std::nth_element(con.begin(), con.begin() + 3, con.end());
+}
+
+int main()
+{
+ test01();
+ return 0;
+}

2
pkgs/development/compilers/gcc/4.8/default.nix
View File

@ -62,7 +62,7 @@ let version = "4.8.2";
*/
enableParallelBuilding = !profiledCompiler;
patches = []
patches = [ ./bug-58800.patch ] # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58800
++ optional enableParallelBuilding ./parallel-bconfig.patch
++ optional (cross != null) ./libstdc++-target.patch
# ++ optional noSysDirs ./no-sys-dirs.patch