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[Eric Mullen <emullen AT cs.washington.edu>]

I got the this error message while working on a large project (an extension to compcert). What does it mean?

Toplevel input, characters 0-35:
Anomaly: type_of: variable tprog unbound. Please report.

The variable tprog is a section variable defined earlier in the file.

I have a screenshot of the error as well (not attached, but feel free to email me for it). I have a git commit of the exact state of the code where the error occurred, and I have the emacs/coqtop instance still running (if there's a way to get more debug information out).

I'm using Coq 8.4pl3, ProofGeneral version 4.2, Emacs version 24.3.1

Thanks,

Eric