* bug#28729: 26.0.60; Incorrect Edebug spec for gv-define-setter
@ 2017-10-07 13:51 Gemini Lasswell
2019-07-15 9:16 ` Lars Ingebrigtsen
0 siblings, 1 reply; 2+ messages in thread
From: Gemini Lasswell @ 2017-10-07 13:51 UTC (permalink / raw)
To: 28729
The Edebug spec for gv-define-setter is incorrect. It should use
:name, so Edebug doesn't confuse it with the getter, and it should use
def-body instead of body. To reproduce the problem, put this bit of
code into *scratch*:
(defun obo-ref (a idx)
(aref a (1- idx)))
(gv-define-setter obo-ref (val a idx)
`(aset ,a (1- ,idx) ,val))
(defvar my-array [ 10 20 30 40 ])
(defun set-first-elem (n)
(setf (obo-ref my-array 1) n))
Then:
M-x edebug-all-defs RET
M-x eval-buffer RET
Result: Eager macro-expansion failure: (wrong-type-argument consp nil)
M-: (obo-ref my-array 3) RET
SPC SPC
Result: Edebug starts stepping through the setter, then quits with
"Source has changed - reevaluate definition of obo-ref".
^ permalink raw reply [flat|nested] 2+ messages in thread
* bug#28729: 26.0.60; Incorrect Edebug spec for gv-define-setter
2017-10-07 13:51 bug#28729: 26.0.60; Incorrect Edebug spec for gv-define-setter Gemini Lasswell
@ 2019-07-15 9:16 ` Lars Ingebrigtsen
0 siblings, 0 replies; 2+ messages in thread
From: Lars Ingebrigtsen @ 2019-07-15 9:16 UTC (permalink / raw)
To: Gemini Lasswell; +Cc: 28729
Gemini Lasswell <gazally@runbox.com> writes:
> The Edebug spec for gv-define-setter is incorrect. It should use
> :name, so Edebug doesn't confuse it with the getter, and it should use
> def-body instead of body. To reproduce the problem, put this bit of
> code into *scratch*:
>
> (defun obo-ref (a idx)
> (aref a (1- idx)))
>
> (gv-define-setter obo-ref (val a idx)
> `(aset ,a (1- ,idx) ,val))
>
> (defvar my-array [ 10 20 30 40 ])
>
> (defun set-first-elem (n)
> (setf (obo-ref my-array 1) n))
>
> Then:
>
> M-x edebug-all-defs RET
> M-x eval-buffer RET
>
> Result: Eager macro-expansion failure: (wrong-type-argument consp nil)
I can confirm that changing `body' to `def-body' fixes this bug.
> M-: (obo-ref my-array 3) RET
> SPC SPC
>
> Result: Edebug starts stepping through the setter, then quits with
> "Source has changed - reevaluate definition of obo-ref".
This is till a problem. I'm not sure what you mean by "It should use
:name" -- how does that work in edebug specs? (I'm not particularly
familiar with edebug internals.)
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
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2017-10-07 13:51 bug#28729: 26.0.60; Incorrect Edebug spec for gv-define-setter Gemini Lasswell
2019-07-15 9:16 ` Lars Ingebrigtsen
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