Import cvs-1.11.17 onto vendor branch.

5 files changed, 184 insertions, 39 deletions

diff --git a/contrib/cvs/lib/ChangeLog b/contrib/cvs/lib/ChangeLog
index ae64487..fa9d4a9 100644
--- a/contrib/cvs/lib/ChangeLog
+++ b/contrib/cvs/lib/ChangeLog
@@ -1,3 +1,31 @@
+2004-05-28  Derek Price  <derek@ximbiot.com>
+
+	* xsize.h: New file from GNULIB.
+	* Makefile.am (libcvs_a_SOURCES): Add xsize.h.
+
+2004-05-15  Derek Price  <derek@ximbiot.com>
+
+	* libcvs.dsp: Header file list updated.
+	* libcvs.dep: Regenerated for "libcvs.dsp" changes.
+	* libcvs.mak: Regenerated for "libcvs.dsp" changes.
+	(Patch from Conrad Pino <conrad@pino.com>.)
+
+2004-05-13  Derek Price  <derek@ximbiot.com>
+
+	* .cvsignore: Changed for "libcvs.dsp" changes.
+	* libcvs.dsp: Added for "../cvsnt.dsw" changes.
+	* libcvs.dep: Added for "libcvs.dsp" addition.
+	* libcvs.mak: Added for "libcvs.dsp" addition.
+	(Patch from Conrad Pino <conrad@pino.com>.)
+
+2004-04-20  Derek Price  <derek@ximbiot.com>
+
+	* system.h: Correct comments.
+
+2004-04-19  Derek Price  <derek@ximbiot.com>
+
+	* system.h: Gratuitous reformatting.
+
 2004-04-07  Derek Price  <derek@ximbiot.com>
 
 	* regex.c: Revise "FREE_VAR" macro to eliminate C4090/C4022 warnings
diff --git a/contrib/cvs/lib/Makefile.am b/contrib/cvs/lib/Makefile.am
index 9409b9a..91cdeea 100644
--- a/contrib/cvs/lib/Makefile.am
+++ b/contrib/cvs/lib/Makefile.am
@@ -85,8 +85,12 @@ EXTRA_DIST = \
 	.cvsignore \
 	ChangeLog.fsf \
 	build_lib.com \
+	libcvs.dep libcvs.dsp libcvs.mak \
 	xgssapi.h
 
+# For the xsize module from GNULIB.
+libcvs_a_SOURCES += xsize.h
+
 # Until Automake gets its act together
 distclean-local:
 	rm -f fnmatch.h
diff --git a/contrib/cvs/lib/Makefile.in b/contrib/cvs/lib/Makefile.in
index a8ff862..012d089 100644
--- a/contrib/cvs/lib/Makefile.in
+++ b/contrib/cvs/lib/Makefile.in
@@ -166,6 +166,8 @@ noinst_LIBRARIES = libcvs.a
 # Also should look into unifying regular expression matching in CVS
 # with the diff library (perhaps to have the caller, CVS, do the
 # matching?)
+
+# For the xsize module from GNULIB.
 libcvs_a_SOURCES = \
 	argmatch.c \
 	getdate.y \
@@ -189,14 +191,15 @@ libcvs_a_SOURCES = \
 	system.h \
 	wait.h \
 	xselect.h \
-	xtime.h
-
+	xtime.h\
+xsize.h
 libcvs_a_LIBADD = @LIBOBJS@
 
 EXTRA_DIST = \
 	.cvsignore \
 	ChangeLog.fsf \
 	build_lib.com \
+	libcvs.dep libcvs.dsp libcvs.mak \
 	xgssapi.h
 
 subdir = lib
diff --git a/contrib/cvs/lib/system.h b/contrib/cvs/lib/system.h
index 4b25d31..a18dff8 100644
--- a/contrib/cvs/lib/system.h
+++ b/contrib/cvs/lib/system.h
@@ -289,7 +289,7 @@ int utime ();
 
 
 #ifdef STDC_HEADERS
-#include <stdlib.h>
+# include <stdlib.h>
 #else
 char *getenv ();
 char *malloc ();
@@ -300,7 +300,7 @@ extern int errno;
 
 /* SunOS4 apparently does not define this in stdlib.h.  */
 #ifndef EXIT_FAILURE
-#define EXIT_FAILURE 1
+# define EXIT_FAILURE 1
 #endif
 
 /* check for POSIX signals */
@@ -323,26 +323,26 @@ extern int errno;
 /* Under OS/2, this must be included _after_ stdio.h; that's why we do
    it here. */
 #ifdef USE_OWN_TCPIP_H
-#include "tcpip.h"
+# include "tcpip.h"
 #endif
 
 #ifdef HAVE_FCNTL_H
-#include <fcntl.h>
+# include <fcntl.h>
 #else
-#include <sys/file.h>
+# include <sys/file.h>
 #endif
 
 #ifndef SEEK_SET
-#define SEEK_SET 0
-#define SEEK_CUR 1
-#define SEEK_END 2
+# define SEEK_SET 0
+# define SEEK_CUR 1
+# define SEEK_END 2
 #endif
 
 #ifndef F_OK
-#define F_OK 0
-#define X_OK 1
-#define W_OK 2
-#define R_OK 4
+# define F_OK 0
+# define X_OK 1
+# define W_OK 2
+# define R_OK 4
 #endif
 
 #if HAVE_DIRENT_H
@@ -367,7 +367,7 @@ extern int errno;
 #define convert_blocks(b, k) ((k) ? ((b) + 1) / 2 : (b))
 
 #ifndef S_ISLNK
-#define lstat stat
+# define lstat stat
 #endif
 
 /*
@@ -375,13 +375,13 @@ extern int errno;
  * because "config.h" is always included last.
  */
 #ifndef S_IWRITE
-#define	S_IWRITE	0000200		/* write permission, owner */
+# define	S_IWRITE	0000200    /* write permission, owner */
 #endif
 #ifndef S_IWGRP
-#define	S_IWGRP		0000020		/* write permission, grougroup */
+# define	S_IWGRP		0000020    /* write permission, grougroup */
 #endif
 #ifndef S_IWOTH
-#define	S_IWOTH		0000002		/* write permission, other */
+# define	S_IWOTH		0000002    /* write permission, other */
 #endif
 
 /* Under non-UNIX operating systems (MS-DOS, WinNT, MacOS), many filesystem
@@ -390,71 +390,71 @@ extern int errno;
    can hang their own definitions.  */
 
 #ifndef CVS_ACCESS
-#define CVS_ACCESS access
+# define CVS_ACCESS access
 #endif
 
 #ifndef CVS_CHDIR
-#define CVS_CHDIR chdir
+# define CVS_CHDIR chdir
 #endif
 
 #ifndef CVS_CREAT
-#define CVS_CREAT creat
+# define CVS_CREAT creat
 #endif
 
 #ifndef CVS_FOPEN
-#define CVS_FOPEN fopen
+# define CVS_FOPEN fopen
 #endif
 
 #ifndef CVS_FDOPEN
-#define CVS_FDOPEN fdopen
+# define CVS_FDOPEN fdopen
 #endif
 
 #ifndef CVS_MKDIR
-#define CVS_MKDIR mkdir
+# define CVS_MKDIR mkdir
 #endif
 
 #ifndef CVS_OPEN
-#define CVS_OPEN open
+# define CVS_OPEN open
 #endif
 
 #ifndef CVS_READDIR
-#define CVS_READDIR readdir
+# define CVS_READDIR readdir
 #endif
 
 #ifndef CVS_CLOSEDIR
-#define CVS_CLOSEDIR closedir
+# define CVS_CLOSEDIR closedir
 #endif
 
 #ifndef CVS_OPENDIR
-#define CVS_OPENDIR opendir
+# define CVS_OPENDIR opendir
 #endif
 
 #ifndef CVS_RENAME
-#define CVS_RENAME rename
+# define CVS_RENAME rename
 #endif
 
 #ifndef CVS_RMDIR
-#define CVS_RMDIR rmdir
+# define CVS_RMDIR rmdir
 #endif
 
 #ifndef CVS_STAT
-#define CVS_STAT stat
+# define CVS_STAT stat
 #endif
 
 /* Open question: should CVS_STAT be lstat by default?  We need
    to use lstat in order to handle symbolic links correctly with
    the PreservePermissions option. -twp */
 #ifndef CVS_LSTAT
-#define CVS_LSTAT lstat
+# define CVS_LSTAT lstat
 #endif
 
 #ifndef CVS_UNLINK
-#define CVS_UNLINK unlink
+# define CVS_UNLINK unlink
 #endif
 
 /* Wildcard matcher.  Should be case-insensitive if the system is.  */
 #ifndef CVS_FNMATCH
-#define CVS_FNMATCH fnmatch
+# define CVS_FNMATCH fnmatch
 #endif
 
 #ifdef WIN32
@@ -483,7 +483,7 @@ extern int errno;
 #ifdef FILENAMES_CASE_INSENSITIVE
 
 # if defined (__CYGWIN32__) || defined (WOE32)
-    /* Under Windows NT, filenames are case-insensitive, and both / and \
+    /* Under Windows, filenames are case-insensitive, and both / and \
        are path component separators.  */
 #   define FOLD_FN_CHAR(c) (WNT_filename_classes[(unsigned char) (c)])
 extern unsigned char WNT_filename_classes[];
@@ -492,12 +492,14 @@ extern unsigned char WNT_filename_classes[];
 #   define ISDIRSEP(c) (FOLD_FN_CHAR(c) == '/')
 #   define ISABSOLUTE(s) (ISDIRSEP(s[0]) || FOLD_FN_CHAR(s[0]) >= 'a' && FOLD_FN_CHAR(s[0]) <= 'z' && s[1] == ':' && ISDIRSEP(s[2]))
 # else /* ! WOE32 */
-  /* As far as I know, both Cygwin and Macintosh OS X can make it here,
+  /* As far as I know, just Macintosh OS X can make it here,
    * but since the OS X fold just folds a-z into A-Z or visa-versa, I'm just
-   * using it for Cygwin too.  The var name below could probably use a
-   * rename.
+   * allowing it to be used for any case insensitive system which we aren't
+   * yet making other specific folds or exceptions for (basically, anything
+   * case insensitive other than Windows, where \ and C:\ style absolute paths
+   * also need to be accounted for).
    *
-   * Under Mac OS X & Cygwin, filenames are case-insensitive.
+   * Under Mac OS X, filenames are case-insensitive.
    */
 #   define FOLD_FN_CHAR(c) (OSX_filename_classes[(unsigned char) (c)])
 extern unsigned char OSX_filename_classes[];
diff --git a/contrib/cvs/lib/xsize.h b/contrib/cvs/lib/xsize.h
new file mode 100644
index 0000000..7634c6d
--- /dev/null
+++ b/contrib/cvs/lib/xsize.h
@@ -0,0 +1,108 @@
+/* xsize.h -- Checked size_t computations.
+
+   Copyright (C) 2003 Free Software Foundation, Inc.
+
+   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 2, 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, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef _XSIZE_H
+#define _XSIZE_H
+
+/* Get size_t.  */
+#include <stddef.h>
+
+/* Get SIZE_MAX.  */
+#include <limits.h>
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+
+/* The size of memory objects is often computed through expressions of
+   type size_t. Example:
+      void* p = malloc (header_size + n * element_size).
+   These computations can lead to overflow.  When this happens, malloc()
+   returns a piece of memory that is way too small, and the program then
+   crashes while attempting to fill the memory.
+   To avoid this, the functions and macros in this file check for overflow.
+   The convention is that SIZE_MAX represents overflow.
+   malloc (SIZE_MAX) is not guaranteed to fail -- think of a malloc
+   implementation that uses mmap --, it's recommended to use size_overflow_p()
+   or size_in_bounds_p() before invoking malloc().
+   The example thus becomes:
+      size_t size = xsum (header_size, xtimes (n, element_size));
+      void *p = (size_in_bounds_p (size) ? malloc (size) : NULL);
+*/
+
+/* Convert an arbitrary value >= 0 to type size_t.  */
+#define xcast_size_t(N) \
+  ((N) <= SIZE_MAX ? (size_t) (N) : SIZE_MAX)
+
+/* Sum of two sizes, with overflow check.  */
+static inline size_t
+#if __GNUC__ >= 3
+__attribute__ ((__pure__))
+#endif
+xsum (size_t size1, size_t size2)
+{
+  size_t sum = size1 + size2;
+  return (sum >= size1 ? sum : SIZE_MAX);
+}
+
+/* Sum of three sizes, with overflow check.  */
+static inline size_t
+#if __GNUC__ >= 3
+__attribute__ ((__pure__))
+#endif
+xsum3 (size_t size1, size_t size2, size_t size3)
+{
+  return xsum (xsum (size1, size2), size3);
+}
+
+/* Sum of four sizes, with overflow check.  */
+static inline size_t
+#if __GNUC__ >= 3
+__attribute__ ((__pure__))
+#endif
+xsum4 (size_t size1, size_t size2, size_t size3, size_t size4)
+{
+  return xsum (xsum (xsum (size1, size2), size3), size4);
+}
+
+/* Maximum of two sizes, with overflow check.  */
+static inline size_t
+#if __GNUC__ >= 3
+__attribute__ ((__pure__))
+#endif
+xmax (size_t size1, size_t size2)
+{
+  /* No explicit check is needed here, because for any n:
+     max (SIZE_MAX, n) == SIZE_MAX and max (n, SIZE_MAX) == SIZE_MAX.  */
+  return (size1 >= size2 ? size1 : size2);
+}
+
+/* Multiplication of a count with an element size, with overflow check.
+   The count must be >= 0 and the element size must be > 0.
+   This is a macro, not an inline function, so that it works correctly even
+   when N is of a wider tupe and N > SIZE_MAX.  */
+#define xtimes(N, ELSIZE) \
+  ((N) <= SIZE_MAX / (ELSIZE) ? (size_t) (N) * (ELSIZE) : SIZE_MAX)
+
+/* Check for overflow.  */
+#define size_overflow_p(SIZE) \
+  ((SIZE) == SIZE_MAX)
+/* Check against overflow.  */
+#define size_in_bounds_p(SIZE) \
+  ((SIZE) != SIZE_MAX)
+
+#endif /* _XSIZE_H */