The following invalid testcase causes an ICE since GCC 3.0: =============================== int operator+(void,void); ===============================
bug.cc:1: error: '<anonymous>' has incomplete type bug.cc:1: error: invalid use of 'void' bug.cc:1: error: '<anonymous>' has incomplete type bug.cc:1: error: invalid use of 'void' bug.cc:1: internal compiler error: tree check: expected class 'type', have 'exceptional' (error_mark) in grok_op_properties, at cp/decl.c:9078 Please submit a full bug report, [etc.] The ICE happens when grok_op_properties checks whether an argument of the operator has class- or enum-type. Testing a patch. -- Summary: [4.0/4.1/4.2 regression] ICE with invalid operator 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=27278