The following invalid code snippet triggers an ICE since GCC 4.1.0: ================================ struct A {};
void foo() { (struct A){}(); } ================================ The compiler crashes trying to emit an error message, which results in a completely broken diagnostic (e.g. file name and "internal compiler error" message are missing): '{ In function 'foo': tree check: expected class 'expression', have 'exceptional' (constructor) in pp_c_initializer_list, at c-pretty-print.c:1182 Please submit a full bug report, [etc.] Before GCC 4.1.0 we got the error message: bug.c: In function 'foo': bug.c:5: error: called object '{}' is not a function -- Summary: [4.1/4.2/4.3/4.4 regression] ICE resulting in completely broken diagnostic Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: ice-on-invalid-code, diagnostic, 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=35440