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Fix integer arithmetic miss-compilation (bug#53451)

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* lisp/emacs-lisp/comp-cstr.el (comp-cstr-set-range-for-arithm):
When one of the two sources is negated revert to set dst as
number.
* test/src/comp-tests.el (comp-tests-type-spec-tests): Add test to
verify this is effective.
This commit is contained in:
Andrea Corallo 2022-02-09 17:38:10 +01:00
parent 31af9bca99
commit 69e82968d7
2 changed files with 22 additions and 13 deletions
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26
lisp/emacs-lisp/comp-cstr.el
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@ -449,18 +449,20 @@ Return them as multiple value."
(declare (debug (range-body))
(indent defun))
`(with-comp-cstr-accessors
(when-let ((r1 (range ,src1))
(r2 (range ,src2)))
(let* ((l1 (comp-cstr-smallest-in-range r1))
(l2 (comp-cstr-smallest-in-range r2))
(h1 (comp-cstr-greatest-in-range r1))
(h2 (comp-cstr-greatest-in-range r2)))
(setf (typeset ,dst) (when (cl-some (lambda (x)
(comp-subtype-p 'float x))
(append (typeset src1)
(typeset src2)))
'(float))
(range ,dst) ,@range-body)))))
(if (or (neg src1) (neg src2))
(setf (typeset ,dst) '(number))
(when-let ((r1 (range ,src1))
(r2 (range ,src2)))
(let* ((l1 (comp-cstr-smallest-in-range r1))
(l2 (comp-cstr-smallest-in-range r2))
(h1 (comp-cstr-greatest-in-range r1))
(h2 (comp-cstr-greatest-in-range r2)))
(setf (typeset ,dst) (when (cl-some (lambda (x)
(comp-subtype-p 'float x))
(append (typeset src1)
(typeset src2)))
'(float))
(range ,dst) ,@range-body))))))
(defun comp-cstr-add-2 (dst src1 src2)
"Sum SRC1 and SRC2 into DST."