A broken diagnostic is issued for the following invalid code snippet since at least GCC 2.95.3:
==================================================== struct A { int i : 2; }; void foo(bool b) { A a; (a.i || b)(); } ==================================================== bug.cc: In function 'void foo(bool)': bug.cc:9: error: '(((#'bit_field_ref' not supported by dump_expr#<expression error> & 3u) != 0u) || b)' cannot be used as a function -- Summary: Broken diagnostic: 'bit_field_ref' not supported by dump_expr Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: 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=35336