From 0454ef42e74e051dda95004f3c99cbe89bce3a8c Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Thu, 19 Dec 2019 17:51:40 -0700 Subject: Add gdbsupport check-defines script This adds a new script that tries to check that none of the support code uses defines that are not defined by common.m4. This check is necessarily inexact, but this script caught all the issues fixed in the previous patches. gdbsupport/ChangeLog 2020-01-14 Tom Tromey * Makefile.in: Rebuild. * Makefile.am (check-defines): New target. * check-defines.el: New file. Change-Id: I59450e91394d5e6a7fa59e9ab53c95843c4bacd9 --- gdbsupport/ChangeLog | 6 ++++ gdbsupport/Makefile.am | 4 +++ gdbsupport/Makefile.in | 4 +++ gdbsupport/check-defines.el | 77 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 91 insertions(+) create mode 100644 gdbsupport/check-defines.el (limited to 'gdbsupport') diff --git a/gdbsupport/ChangeLog b/gdbsupport/ChangeLog index 96a458d96cc..aa827364ed8 100644 --- a/gdbsupport/ChangeLog +++ b/gdbsupport/ChangeLog @@ -1,3 +1,9 @@ +2020-01-14 Tom Tromey + + * Makefile.in: Rebuild. + * Makefile.am (check-defines): New target. + * check-defines.el: New file. + 2020-01-14 Tom Tromey * configure, Makefile.in, aclocal.m4, common.m4, config.in: diff --git a/gdbsupport/Makefile.am b/gdbsupport/Makefile.am index 48e6079fb9f..1a001a00817 100644 --- a/gdbsupport/Makefile.am +++ b/gdbsupport/Makefile.am @@ -68,3 +68,7 @@ libgdbsupport_a_SOURCES = \ thread-pool.c \ xml-utils.c \ $(selftest) + +# Double-check that no defines are missing from our configury. +check-defines: + cd $(srcdir) && emacs --script check-defines.el diff --git a/gdbsupport/Makefile.in b/gdbsupport/Makefile.in index a2e174d8fc4..5723ae5e97e 100644 --- a/gdbsupport/Makefile.in +++ b/gdbsupport/Makefile.in @@ -691,6 +691,10 @@ uninstall-am: override CC := $(CXX) override CFLAGS := $(CXXFLAGS) +# Double-check that no defines are missing from our configury. +check-defines: + cd $(srcdir) && emacs --script check-defines.el + # Tell versions [3.59,3.63) of GNU make to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: diff --git a/gdbsupport/check-defines.el b/gdbsupport/check-defines.el new file mode 100644 index 00000000000..b59748f0054 --- /dev/null +++ b/gdbsupport/check-defines.el @@ -0,0 +1,77 @@ +;; Verify that preprocessor symbols are defined in config.in. + +;; Copyright (C) 2020 Free Software Foundation, Inc. +;; +;; This file is part of GDB. +;; +;; This program is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation; either version 3 of the License, or +;; (at your option) any later version. +;; +;; This program is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. +;; +;; You should have received a copy of the GNU General Public License +;; along with this program. If not, see . + +;; To use: +;; cd gdbsupport +;; emacs --script check-defines.el + +(require 'cl-lib) + +(setq-default case-fold-search nil) + +;; The currently recognized macros. +(defconst check-regexp "\\_<\\(\\(HAVE\\|PTRACE_TYPE\\|SIZEOF\\)_[a-zA-Z0-9_]+\\)\\_>") + +(defvar check-seen 0) + +;; Whitelist. These are things that have names like autoconf-created +;; macros, but that are managed directly in the code. +(put (intern "HAVE_USEFUL_SBRK") :check-ok t) +(put (intern "HAVE_SOCKETS") :check-ok t) +(put (intern "HAVE_F_GETFD") :check-ok t) +(put (intern "HAVE_IS_TRIVIALLY_COPYABLE") :check-ok t) +(put (intern "HAVE_IS_TRIVIALLY_CONSTRUCTIBLE") :check-ok t) +(put (intern "HAVE_DOS_BASED_FILE_SYSTEM") :check-ok t) + +(defun check-read-config.in (file) + (save-excursion + (find-file-read-only file) + (goto-char (point-min)) + (while (re-search-forward "^#undef \\(.+\\)$" nil t) + (let ((name (match-string 1))) + (put (intern name) :check-ok t))))) + +(defun check-one-file (file) + (save-excursion + (find-file-read-only file) + (goto-char (point-min)) + (while (re-search-forward check-regexp nil t) + (let ((name (match-string 1))) + (unless (get (intern name) :check-ok) + (save-excursion + (goto-char (match-beginning 0)) + (cl-incf check-seen) + (message "%s:%d:%d: error: name %s not defined" + file + (line-number-at-pos) + (current-column) + name))))))) + +(defun check-directory (dir) + (dolist (file (directory-files dir t "\\.[ch]$")) + (check-one-file file))) + +(check-read-config.in "config.in") +(check-read-config.in "../gnulib/config.in") +(check-directory ".") +(check-directory "../gdb/nat") +(check-directory "../gdb/target") + +(when (> check-seen 0) + (message "%d errors seen" check-seen)) -- cgit v1.2.1