The following invalid code snippet triggers an ICE since at least GCC 2.95.3:
======================================================= void* operator new (__SIZE_TYPE__) { return; } ======================================================= bug.cc: In function 'void* operator new(unsigned int)': bug.cc:1: error: return-statement with no value, in function returning 'void*' bug.cc:1: internal compiler error: Segmentation fault Please submit a full bug report, [etc.] -- Summary: ICE on invalid return from operator new 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=29001