[Bug c++/12795] New: [3.4 regression] ICE with attribute __alias__

[reichelt at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12795

           Summary: [3.4 regression] ICE with attribute __alias__
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, ice-checking
          Severity: critical
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org

Mainline's c++ frontend crashes with the following code snippet
(which is the same as in PR12794 ans PR 7490):

============================================================
void foo()
{
    extern void bar () __attribute__ ((__alias__ ("BAR")));
    bar ();
}
============================================================

Compiled with "g++ -c" I get:

PR7490.cc: In function `void foo()':
PR7490.cc:8: internal compiler error: tree check: expected namespace_decl, have
function_decl in namespace_binding, at cp/name-lookup.c:2848
Please submit a full bug report, [etc.]

According to Phil's regression hunter the regression appeared
between 2003-03-23-trunk (#253) and 2003-03-30-trunk (#254).