------- Comment #8 from paolo dot carlini at oracle dot com 2009-10-09 14:46 ------- So, the problem is exactly that you *are* using the system libraries, a mix of the new headers and the system library. This is in general unsupported of course.
While apparently we *do* have a problem in testsuite, not sure why, it seems to me that the new installed compiler + libraries should be ok, in parallel mode, debug mode and everything, assuming you consistently link vs the new libraries, not the system ones. Can you do that and report back? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41645
