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[debbugs-tracker] bug#29865: closed (26.0.50; data-test-popcnt fails in


From: GNU bug Tracking System
Subject: [debbugs-tracker] bug#29865: closed (26.0.50; data-test-popcnt fails in 32bit)
Date: Mon, 15 Jul 2019 13:03:02 +0000

Your message dated Mon, 15 Jul 2019 09:02:06 -0400
with message-id <address@hidden>
and subject line Re: bug#29865: 26.0.50; data-test-popcnt fails in 32bit
has caused the debbugs.gnu.org bug report #29865,
regarding 26.0.50; data-test-popcnt fails in 32bit
to be marked as done.

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-- 
29865: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=29865
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--- Begin Message --- Subject: 26.0.50; data-test-popcnt fails in 32bit Date: Wed, 27 Dec 2017 10:42:47 -0500
Package: Emacs
Version: 26.0.50


"make check" keeps failing for me in test/src/data-tests.el on
data-tests-logcount, because the integer constants used in
data-tests-popcnt are too large for my 32bit build and hence are turned
into floats.

The backtrace it gives me is below.
The 1431655765.0 constant is the result of reading #x55555555!


        Stefan


Test data-tests-logcount backtrace:
  logand(127 1431655765.0)
  (- byte (logand (lsh byte -1) 1431655765.0))
  (setq byte (- byte (logand (lsh byte -1) 1431655765.0)))
  data-tests-popcnt(-255)
  (= (logcount n) (data-tests-popcnt n))
  (setq --cl-flag-- (= (logcount n) (data-tests-popcnt n)))
  (progn (setq n (car --cl-var--)) (setq --cl-flag-- (= (logcount n) (
  (and (consp --cl-var--) (progn (setq n (car --cl-var--)) (setq --cl-
  (while (and (consp --cl-var--) (progn (setq n (car --cl-var--)) (set
  (let* ((--cl-var-- (number-sequence -255 255)) (n nil) (--cl-flag-- 
  (setq value-347 (let* ((--cl-var-- (number-sequence -255 255)) (n ni
  (unwind-protect (setq value-347 (let* ((--cl-var-- (number-sequence 
  (if (unwind-protect (setq value-347 (let* ((--cl-var-- (number-seque
  (let (form-description-348) (if (unwind-protect (setq value-347 (let
  (let ((value-347 (gensym "ert-form-evaluation-aborted-"))) (let (for
  (lambda nil (let ((value-347 (gensym "ert-form-evaluation-aborted-")
  ert--run-test-internal(#s(ert--test-execution-info :test #s(ert-test
  ert-run-test(#s(ert-test :name data-tests-logcount :documentation ni
  ert-run-or-rerun-test(#s(ert--stats :selector t :tests [#s(ert-test 
  ert-run-tests(t #f(compiled-function (event-type &rest event-args) #
  ert-run-tests-batch(nil)
  ert-run-tests-batch-and-exit(nil)
  eval((ert-run-tests-batch-and-exit nil))
  command-line-1(("-L" ":." "-l" "ert" "-l" "src/data-tests.el" "--eva
  command-line()
  normal-top-level()
Test data-tests-logcount condition:
    (wrong-type-argument integer-or-marker-p 1431655765.0)



--- End Message ---
--- Begin Message --- Subject: Re: bug#29865: 26.0.50; data-test-popcnt fails in 32bit Date: Mon, 15 Jul 2019 09:02:06 -0400 User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)
> Is this still relevant now that Emacs has bignum support?

No, indeed: I don't see this test error any more, so it's likely been
fixed by the introduction of bignums.


        Stefan



--- End Message ---

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