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| author | Mattias Engdegård <mattiase@acm.org> | 2023-05-01 15:55:32 +0200 |
|---|---|---|
| committer | Mattias Engdegård <mattiase@acm.org> | 2023-05-01 17:11:50 +0200 |
| commit | 7acb3f1c060872b1802e7548d991ca8a9f0fef01 (patch) | |
| tree | 3f40fc40d805a84daac37748ade991485de284c8 /lisp/subr.el | |
| parent | aa56253407eaa62fdfbc037d5b5a6b3c41e6796e (diff) | |
| download | emacs-7acb3f1c060872b1802e7548d991ca8a9f0fef01.tar.gz | |
Add the function declaration and property `important-return-value`
Now the declaration
(declare (important-return-value t))
can be used to have the byte-compiler warn when the return value from
a call is discarded (bug#61730).
* lisp/emacs-lisp/bytecomp.el (byte-compile-form)
(important-return-value-fns): Use the function property
`important-return-value` instead of looking through a static list.
* lisp/emacs-lisp/byte-run.el (byte-run--set-important-return-value)
(defun-declarations-alist): New function declaration, setting the
property of the same name.
* lisp/emacs-lisp/cl-macs.el:
* lisp/subr.el (assoc-default): Set the property.
* doc/lispref/functions.texi (Declare Form):
* doc/lispref/symbols.texi (Standard Properties): Document.
* etc/NEWS: Announce.
Diffstat (limited to 'lisp/subr.el')
| -rw-r--r-- | lisp/subr.el | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lisp/subr.el b/lisp/subr.el index 427014cedc3..1452a1117d3 100644 --- a/lisp/subr.el +++ b/lisp/subr.el @@ -862,6 +862,7 @@ If that is non-nil, the element matches; then `assoc-default' If no element matches, the value is nil. If TEST is omitted or nil, `equal' is used." + (declare (important-return-value t)) (let (found (tail alist) value) (while (and tail (not found)) (let ((elt (car tail))) |