[ESS-bugs] ESS bug in 17.11 with large files?

[Sparapani, Rodney]

Hi Gang:

I think I have seen sporadic versions of this error before with ESS[SAS].
However, it seems to be happening more often with 17.11.  It usually
happens when you open a large file.  You see the following error and
emacs hangs hard and you have to kill it, but it doesn’t crash:
“Error in post-command-hook (eldoc-schedule-timer): (wrong-type-argument listp list)”.

This is kind of annoying since there is no eldoc for ESS[SAS].  Unfortunately,
it does not happen every time you load a large file, but it is now happening
often enough to give me a chance of debugging this.  So, I set debug-on-error
to t.  And, then I got a backtrace, but I don’t understand why there is no
eldoc in it.

Debugger entered--Lisp error: (wrong-type-argument listp list)
  warning-suppress-p((undo discard-info) (list (undo discard-info)))
  display-warning((undo discard-info) "Buffer ‘ptb.lst’ undo info was 19401978 bytes long.\nThe undo info was discarded because it exceeded `undo-outer-limit'.\n\nThis is normal if you executed a command that made a huge change\nto the buffer.  In that case, to prevent similar problems in the\nfuture, set `undo-outer-limit' to a value that is large enough to\ncover the maximum size of normal changes you expect a single\ncommand to make, but not so large that it might exceed the\nmaximum memory allotted to Emacs.\n\nIf you did not execute any such command, the situation is\nprobably due to a bug and you should report it.\n\nYou can disable the popping up of this buffer by adding the entry\n(undo discard-info) to the user option `warning-suppress-types',\nwhich is defined in the `warnings' library.\n" :warning)
  undo-outer-limit-truncate(19401978)
  Automatic\ GC()
  command-error-default-function((wrong-type-argument listp list) "" display-warning)

Is this a different bug or a configuration error?  Can someone please help me
with this?  It is happening so often that it makes ESS[SAS] difficult to use.  Thanks

ess-version: 17.11 [Released git: d03efb64579f]
emacs version: 25.2.2

--
Rodney Sparapani, PhD
Assistant Professor of Biostatistics
Medical College of Wisconsin
Milwaukee campus