Crash: record with oversize array

[ehaas]

union U {
    int a;
    char bytes[3333333333333333333];
};

panic: integer overflow
/Users/ehaas/source/arocc/src/aro/record_layout.zig:259:59: 0x105d1999e in layoutRegularField (arocc)
        self.size_bits = @max(self.size_bits, offset_bits + size_bits);
                                                          ^
/Users/ehaas/source/arocc/src/aro/record_layout.zig:71:57: 0x105ca00aa in layoutFields (arocc)
                    fld.layout = self.layoutRegularField(field_attrs, type_layout);
                                                        ^
/Users/ehaas/source/arocc/src/aro/record_layout.zig:577:33: 0x105beb0e1 in compute (arocc)
            context.layoutFields(rec);
                                ^

[ehaas]

All additions/multiplications in the record layout code should be audited for overflows; this will trigger a different one:

struct S {
    __attribute__((aligned(268435456))) int x;
};