New failures in libstdc++ on x86-64?

[Diego Novillo]

Has anyone seen these new libstdc++ failures on x86-64?  They started
happening today.  At first I thought this was caused by a local patch,
but undoing it and re-building again didn't make it go away:

/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h:106: error: duplicate base type `std::streambuf' invalid
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h:138: error: `pos_type' does not name a type
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h:145: error: `pos_type' does not name a type
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h: In constructor `__gnu_test::fail_streambuf::fail_streambuf()':
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h:115: error: `setg' was not declared in this scope
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h: In member function `virtual __gnu_test::int_type __gnu_test::fail_streambuf::underflow()':
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h:121: warning: converting of negative value `-0x00000000000000001' to `__gnu_test::int_type'
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h: In member function `virtual __gnu_test::int_type __gnu_test::fail_streambuf::uflow()':
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h:127: warning: converting of negative value `-0x00000000000000001' to `__gnu_test::int_type'
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h: In member function `virtual __gnu_test::int_type __gnu_test::fail_streambuf::overflow(__gnu_test::int_type)':
/home/cygnus/dnovillo/gcc/src.x86-64/libstdc++-v3/testsuite/testsuite_io.h:134: warning: converting of negative value `-0x00000000000000001' to `__gnu_test::int_type'

This affects essentially all of 27_io/basic_filebuf and
27_io/basic_istream tests.


Thanks.  Diego.