[Bug middle-end/27694] New: C++ dynamic cast is incorrect

[hjl at lucon dot org]

After this patch:

http://gcc.gnu.org/ml/gcc-patches/2006-04/msg00057.html

C++ dynamic cast code on x86-64 changes to

        call    __dynamic_cast
        testb   %al, %al

and stops working for some cases. The previous working version on x86-64 is

        call    __dynamic_cast
        testq   %rax, %rax


-- 
           Summary: C++ dynamic cast is incorrect
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl at lucon dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27694