Actually adding backtrace handling.

I hope I did not forget some [with] clauses. Otherwise, some
stack frame will be missing from the debug.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16167 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/system.ml b/lib/system.ml
index dbab923af0..ed23bde197 100644
--- a/lib/system.ml
+++ b/lib/system.ml
@@ -142,7 +142,9 @@ let extern_intern ?(warn=true) magic suffix =
         marshal_out channel val_0;
         close_out channel
       with e ->
-	begin try_remove filename; raise e end
+	let e = Errors.push e in
+        let () = try_remove filename in
+        raise e
     with Sys_error s -> error ("System error: " ^ s)
   and intern_state paths name =
     try