[Bug c++/28248] New: [4.1/4.2 regression] Trouble with invalid initializers

[reichelt at gcc dot gnu dot org]

The following invalid code snippet causes an ICE since GCC 4.1.0:

=================================
union A { char c; };

template<int> void foo()
{
  (A) { 0, 0 };
}

void bar()
{
  foo<0>();
}
=================================

  bug.cc: In function 'void foo() [with int <anonymous> = 0]':
  bug.cc:10:   instantiated from here
  bug.cc:5: internal compiler error: in process_init_constructor_union, at
cp/typeck2.c:972
  Please submit a full bug report, [etc.]

If I replace "union" by "struct" the code compiles without error-message
or warning. Without the template the code triggers an error message in both
cases:

  bug.cc: In function 'void foo()':
  bug.cc:5: error: too many initializers for 'A'

Before GCC 4.1.0 the code triggered a pedwarn (and compiled without
problems with -fpermissive).


-- 
           Summary: [4.1/4.2 regression] Trouble with invalid initializers
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, accepts-invalid, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28248