* lisp/emacs-lisp/byte-opt.el
(side-effect-free-fns, side-effect-and-error-free-fns):
Upgrade `byte-code-function-p` to error-free status.
bool-vector-count-consecutive bool-vector-count-population
bool-vector-subsetp
boundp buffer-file-name buffer-local-variables buffer-modified-p
- buffer-substring byte-code-function-p
+ buffer-substring
capitalize car-less-than-car car cdr ceiling char-after char-before
char-equal char-to-string char-width compare-strings
window-configuration-equal-p concat coordinates-in-window-p
'(arrayp atom
bobp bolp bool-vector-p
buffer-list buffer-size buffer-string bufferp
+ byte-code-function-p
car-safe case-table-p cdr-safe char-or-string-p characterp
charsetp commandp cons consp
current-buffer current-global-map current-indentation