The C++ frontend crashes since GCC 4.0.3 on the following invalid code snippet:
================================= void foo() { const int x[] = 0; ++x; } ================================= bug.cc: In function 'void foo()': bug.cc:3: error: initializer fails to determine size of 'x' bug.cc:3: error: cannot convert 'int' to 'const int [1]' in initialization bug.cc:4: internal compiler error: tree check: expected class 'type', have 'exceptional' (error_mark) in get_unwidened, at tree.c:5322 Please submit a full bug report, [etc.] -- Summary: [4.0/4.1/4.2 regression] ICE incrementing an array 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=27722