debugger can't see locals in caller when AREF errors

[3b]

(defun foo (x z)
  (declare (optimize (debug 3)))
  (let ((y (list 1 1)))
    (break "x" y)
    (aref x z)
    (print (/ 1 z))))

(foo #(1) 1)
(foo #(1) 0)

in both cases, L in debugger from BREAK shows
X = #(1)
Y = (1 1)
Z = 0

after continuing from break in first form, AREF errors with SB-INT:INVALID-ARRAY-INDEX-ERROR, and after 'fra 1' shows L
X = #(1)
Z = 1

after continuing from break in second form, / errors withDIVISION-BY-ZERO , and after 'fra 1' shows L
X = #(1)
Y = (1 1)
Z = 0

with AREF declared NOTINLINE, the debugger shows Y as expected in caller frame

tested on 1.2.7.54-d34f08f-dirty arm/linux, 1.2.4.80-844efff x8664 linux, and 1.2.7.70-e772905 x8664 linux

[Stas Boukarev (stassats)]

That doesn't happen with debug 2.

[Stas Boukarev (stassats)]

In 05845e173791a73c692e4a5d27d361a331e11859