Adding a field ci_cstr_nargs to case_info and mind_consnrealargs to

one_inductive_body so that when eta-expanding at "match" printing time
we know if a let is part of the expected signature or part of the
body.

This is an easy fix for bugs like #3293. Another fix could be to
enforce, as an invariant, or better syntactically, that
"match"/"Case"'s have the body of their branches expanded.

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/term.mli b/kernel/term.mli
index dab1d2ceab..f2f5e8495d 100644
--- a/kernel/term.mli
+++ b/kernel/term.mli
@@ -46,6 +46,7 @@ type case_info = Constr.case_info =
   { ci_ind        : inductive;
     ci_npar       : int;
     ci_cstr_ndecls : int array;
+    ci_cstr_nargs : int array;
     ci_pp_info    : case_printing
   }