[Bug c++/27379] New: [4.0/4.1/4.2 regression] ICE on invalid copy-ctor declaration

[reichelt at gcc dot gnu dot org]

The following invalid code snippet ICEs with a segfault since GCC 3.4.0
(it also crashed with GCC 3.0.x):

=======================================================
struct A
{
  A(const A&) !;
};

void foo(A b)
{
  A a(b);
}
=======================================================

bug.cc:3: error: expected ';' before '!' token
bug.cc: In function 'void foo(A)':
bug.cc:8: internal compiler error: Segmentation fault
Please submit a full bug report, [etc.]

The following slightly longer example crashes with a different ICE:

=======================================================
struct A
{
  A(const A&) !;
};

struct B : A {};

void foo(B b)
{
  B c(b);
}
=======================================================

bug.cc:3: error: expected ';' before '!' token
bug.cc: In function 'void foo(B)':
bug.cc:10: internal compiler error: vector VEC(tree,base) index domain error,
in locate_copy at cp/method.c:930
Please submit a full bug report, [etc.]


-- 
           Summary: [4.0/4.1/4.2 regression] ICE on invalid copy-ctor
                    declaration
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, 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=27379