Compiler bug: bit<32>: unexpected type

[jhavrane]

Issue

terminate called after throwing an instance of 'Util::CompilerBug'
  what():  In file: ./p4c/ir/ir.def:411
Compiler Bug: prog.p4(2): bit<32>: unexpected type
bit<32>() main;

P4 program

#include <core.p4>
bit<32>() main;