The following invalid code snippet triggers an ICE since at least GCC 2.95.3:
================================================== template<operator+> void foo(); void bar() { foo(); } ================================================== bug.cc:1: error: expected identifier before 'operator' bug.cc:1: error: declaration of 'operator+' as non-function bug.cc: In function 'void bar()': bug.cc:5: internal compiler error: in type_unification_real, at cp/pt.c:9533 Please submit a full bug report, [etc.] -- Summary: ICE on invalid template parameter 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=27670