The following invalid testcase triggers an ICE since GCC 4.2.1:
===================================
union A
{
int &i;
};
void foo()
{
A();
}
===================================
bug.cc:3: error: 'A::i' may not have reference type 'int&' because it is a
member of a union
bug.cc: In function 'void foo()':
bug.cc:8: internal compiler error: Segmentation fault
Please submit a full bug report, [etc.]
--
Summary: [4.2/4.3 regression] ICE on reference member in union
Product: gcc
Version: 4.3.0
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=33459