Moving project to sourceforge.

git-svn-id: https://dist.svn.sourceforge.net/svnroot/dist/trunk/dist@1 190e5f8e-a817-0410-acf6-e9863daed9af

1 files changed, 127 insertions, 0 deletions

diff --git a/mcon/U/d_safemcpy.U b/mcon/U/d_safemcpy.U
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+++ b/mcon/U/d_safemcpy.U
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+?RCS: $Id$
+?RCS:
+?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
+?RCS: 
+?RCS: You may redistribute only under the terms of the Artistic Licence,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic Licence; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?RCS:
+?RCS: $Log: d_safemcpy.U,v $
+?RCS: Revision 3.0.1.5  1997/02/28  15:41:12  ram
+?RCS: patch61: improved overlapping copy check
+?RCS: patch61: comfort them if they have memmove
+?RCS: patch61: added ?F: metalint hint
+?RCS:
+?RCS: Revision 3.0.1.4  1995/07/25  13:58:46  ram
+?RCS: patch56: re-arranged compile line to include ldflags before objects
+?RCS:
+?RCS: Revision 3.0.1.3  1995/03/21  08:47:26  ram
+?RCS: patch52: swapped two first arguments of memcpy() calls
+?RCS:
+?RCS: Revision 3.0.1.2  1994/10/29  16:15:10  ram
+?RCS: patch36: added 'ldflags' to the test compile line (ADO)
+?RCS:
+?RCS: Revision 3.0.1.1  1994/05/06  14:53:12  ram
+?RCS: patch23: ensure string is not optimized in read-only memory (ADO)
+?RCS:
+?RCS: Revision 3.0  1993/08/18  12:06:58  ram
+?RCS: Baseline for dist 3.0 netwide release.
+?RCS:
+?MAKE:d_safemcpy: cat d_memcpy +cc +optimize +ccflags +libs +ldflags rm \
+	d_memmove i_memory i_stdlib i_string i_unistd Oldconfig Setvar
+?MAKE:	-pick add $@ %<
+?S:d_safemcpy:
+?S:	This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
+?S:	the memcpy() routine can do overlapping copies.
+?S:.
+?C:HAS_SAFE_MEMCPY (SAFE_MEMCPY):
+?C:	This symbol, if defined, indicates that the memcpy routine is available
+?C:	to copy potentially overlapping memory blocks. Otherwise you should
+?C:	probably use memmove() or memcpy(). If neither is defined, roll your
+?C:	own version.
+?C:.
+?H:#$d_safemcpy HAS_SAFE_MEMCPY	/**/
+?H:.
+?F:!safemcpy
+?LINT: set d_safemcpy
+: can memcpy handle overlapping blocks?
+?X: assume the worst
+val="$undef"
+case "$d_memcpy" in
+"$define")
+	echo " "
+	echo "Checking to see if your memcpy() can do overlapping copies..." >&4
+	$cat >foo.c <<EOCP
+#$i_memory I_MEMORY
+#$i_stdlib I_STDLIB
+#$i_string I_STRING
+#$i_unistd I_UNISTD
+EOCP
+	$cat >>foo.c <<'EOCP'
+#include <stdio.h>
+#ifdef I_MEMORY
+#  include <memory.h>
+#endif
+#ifdef I_STDLIB
+#  include <stdlib.h>
+#endif
+#ifdef I_STRING
+#  include <string.h>
+#else
+#  include <strings.h>
+#endif
+#ifdef I_UNISTD
+#  include <unistd.h>  /* Needed for NetBSD */
+#endif
+int main()
+{
+char buf[128], abc[128];
+char *b;
+int len;
+int off;
+int align;
+
+/* Copy "abcde..." string to char abc[] so that gcc doesn't
+   try to store the string in read-only memory. */
+memcpy(abc, "abcdefghijklmnopqrstuvwxyz0123456789", 36);
+
+for (align = 7; align >= 0; align--) {
+	for (len = 36; len; len--) {
+		b = buf+align;
+		memcpy(b, abc, len);
+		for (off = 1; off <= len; off++) {
+			memcpy(b+off, b, len);
+			memcpy(b, b+off, len);
+			if (memcmp(b, abc, len))
+				exit(1);
+		}
+	}
+}
+exit(0);
+}
+EOCP
+	if $cc $optimize $ccflags $ldflags \
+		    -o safemcpy foo.c $libs >/dev/null 2>&1; then
+		if ./safemcpy 2>/dev/null; then
+			echo "Yes, it can."
+			val="$define"
+		else
+			echo "It can't, sorry."
+			case "$d_memmove" in
+			"$define") echo "But that's Ok since you have memmove()." ;;
+			esac
+		fi
+	else
+		echo "(I can't compile the test program, so we'll assume not...)"
+		case "$d_memmove" in
+		"$define") echo "But that's Ok since you have memmove()." ;;
+		esac
+	fi
+	;;
+esac
+$rm -f foo.* safemcpy core
+set d_safemcpy
+eval $setvar
+