COMPILER BUG: ../frontends/p4/def_use.h:292

[smolkaj]

I get the error

terminate called after throwing an instance of 'Util::CompilerBug'
  what():  COMPILER BUG: ../frontends/p4/def_use.h:292
../frontends/p4/def_use.h:292: Null 

when trying to compile the following (minimized) program:

#include <core.p4>
#include <v1model.p4>
typedef standard_metadata_t std_meta_t;
struct H { };
struct M { };

parser ParserI(packet_in b, out H h, inout M m, inout std_meta_t s) {
    state start { transition accept; }
}

control IngressI(inout H hdr, inout M meta, inout std_meta_t std_meta) {
    apply { }
}

control EgressI(inout H hdr, inout M meta, inout std_meta_t std_meta) {

    action a() { }

    table t {
        key = { }
        actions = { a; }
    }

    IngressI() do;
    
    apply {
        switch(t.apply().action_run) {
            a: { 
                return; 
            }
            default: {
                do.apply(hdr, meta, std_meta);
            }
        }
    }
}

control VerifyChecksumI(in H hdr, inout M meta) {
    apply { }
}
control ComputeChecksumI(inout H hdr, inout M meta) {
    apply { }
}
control DeparserI(packet_out b, in H hdr) {
    apply { }
}

V1Switch(ParserI(), VerifyChecksumI(), IngressI(), EgressI(), ComputeChecksumI(),
         DeparserI()) main;

[smolkaj]

fixed