diff options
Diffstat (limited to 'lisp/emacs-lisp/bytecomp.el')
| -rw-r--r-- | lisp/emacs-lisp/bytecomp.el | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el index df93528683c..e1b5b402b28 100644 --- a/lisp/emacs-lisp/bytecomp.el +++ b/lisp/emacs-lisp/bytecomp.el @@ -1,12 +1,14 @@ ;;; bytecomp.el --- compilation of Lisp code into byte code ;; Copyright (C) 1985, 1986, 1987, 1992, 1994, 1998, 2000, 2001, 2002, -;; 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. +;; 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 +;; Free Software Foundation, Inc. ;; Author: Jamie Zawinski <jwz@lucid.com> ;; Hallvard Furuseth <hbf@ulrik.uio.no> ;; Maintainer: FSF ;; Keywords: lisp +;; Package: emacs ;; This file is part of GNU Emacs. @@ -1665,6 +1667,9 @@ that already has a `.elc' file." (if (and (string-match emacs-lisp-file-regexp bytecomp-source) (file-readable-p bytecomp-source) (not (auto-save-file-name-p bytecomp-source)) + (not (string-equal dir-locals-file + (file-name-nondirectory + bytecomp-source))) (setq bytecomp-dest (byte-compile-dest-file bytecomp-source)) (if (file-exists-p bytecomp-dest) @@ -1811,17 +1816,25 @@ The value is non-nil if there were no errors, nil if errors." (insert "\n") ; aaah, unix. (if (file-writable-p target-file) ;; We must disable any code conversion here. - (let ((coding-system-for-write 'no-conversion)) + (let ((coding-system-for-write 'no-conversion) + ;; Write to a tempfile so that if another Emacs + ;; process is trying to load target-file (eg in a + ;; parallel bootstrap), it does not risk getting a + ;; half-finished file. (Bug#4196) + (tempfile (make-temp-name target-file))) (if (memq system-type '(ms-dos 'windows-nt)) (setq buffer-file-type t)) - (when (file-exists-p target-file) - ;; Remove the target before writing it, so that any - ;; hard-links continue to point to the old file (this makes - ;; it possible for installed files to share disk space with - ;; the build tree, without causing problems when emacs-lisp - ;; files in the build tree are recompiled). - (delete-file target-file)) - (write-region (point-min) (point-max) target-file)) + (write-region (point-min) (point-max) tempfile nil 1) + ;; This has the intentional side effect that any + ;; hard-links to target-file continue to + ;; point to the old file (this makes it possible + ;; for installed files to share disk space with + ;; the build tree, without causing problems when + ;; emacs-lisp files in the build tree are + ;; recompiled). Previously this was accomplished by + ;; deleting target-file before writing it. + (rename-file tempfile target-file t) + (message "Wrote %s" target-file)) ;; This is just to give a better error message than write-region (signal 'file-error (list "Opening output file" @@ -4648,6 +4661,8 @@ and corresponding effects." (defvar byte-code-meter) (defun byte-compile-report-ops () + (or (boundp 'byte-metering-on) + (error "You must build Emacs with -DBYTE_CODE_METER to use this")) (with-output-to-temp-buffer "*Meter*" (set-buffer "*Meter*") (let ((i 0) n op off) |