bug#46906: 28.0.50; byte compiler infloops trying to compile infloop

[Andy Moreton]

On Wed 03 Mar 2021, Pip Cet wrote:

> On Wed, Mar 3, 2021 at 9:15 PM Pip Cet <pipcet@gmail.com> wrote:
>>
>> Recipe in emacs -Q:
>>
>> In *scratch*, evaluate:
>>
>> (byte-compile (lambda (x)
>>                 (if x (f))
>>                 (while t)))
>>
>> Expected result:
>>
>> A (fairly useless) bytecode object
>>
>> Actual result:
>>
>> A spinning hourglass.
>
> Seems to be a fairly obvious bug in byte-opt.el, patch attached.

Perhaps add your reproducer as a test case ?

    AndyM