GCC build failure, HEAD@142737 on native

[regress]

With your recent patch, GCC HEAD revision 142737 had problems on:
native: build (about the same as the previous build)
Attached is build output for those targets.
The previous build was of revision 142735.

Log information for changes since the last build:
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r142736 | hjl | 2008-12-12 17:40:15 -0800 (Fri, 12 Dec 2008) | 6 lines
Changed paths:
   M /trunk/libstdc++-v3/ChangeLog
   M /trunk/libstdc++-v3/testsuite/util/regression/trait/assoc/type_trait.hpp

2008-12-12  H.J. Lu  <hongjiu.lu@intel.com>

	PR libstdc++/37144
	* testsuite/util/regression/trait/assoc/type_trait.hpp
	(regression_test_type_traits): Add const to pair_type_rebind.

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For more information, see <http://gcc.gnu.org/regtest/HEAD/>.