xmemdup.c: New xmemdup function.

* xmemdup.c:  New xmemdup function.
	* Makefile.in, makefile.vms, vmsbuild.com:  Use xmemdup.[co].

From-SVN: r29199

libiberty/ChangeLog

@@ -1,3 +1,8 @@
+1999-09-07  Jeff Garzik  <jgarzik@pobox.com>
+
+	* xmemdup.c: New xmemdup function.
+	* Makefile.in, makefile.vms, vmsbuild.com:  Use xmemdup.[co].
+
 Tue Sep  7 23:32:18 1999  Linas Vepstas  <linas@linas.org>
 
         * config.table: Add openedition target.

libiberty/Makefile.in

@@ -129,14 +129,14 @@ CFILES = asprintf.c alloca.c argv.c atexit.c basename.c bcmp.c bcopy.c \
 	spaces.c splay-tree.c strcasecmp.c strncasecmp.c strchr.c strdup.c \
 	strerror.c strrchr.c strsignal.c strstr.c strtod.c strtol.c strtoul.c \
 	tmpnam.c vasprintf.c vfork.c vfprintf.c vprintf.c vsprintf.c \
-	waitpid.c xatexit.c xexit.c xmalloc.c xstrdup.c xstrerror.c
+	waitpid.c xatexit.c xexit.c xmalloc.c xmemdup.c xstrdup.c xstrerror.c
 
 # These are always included in the library.
 REQUIRED_OFILES = argv.o choose-temp.o concat.o cplus-dem.o \
   fdmatch.o fnmatch.o getopt.o getopt1.o getpwd.o getruntime.o hex.o \
   floatformat.o objalloc.o obstack.o pexecute.o spaces.o \
   splay-tree.o strerror.o strsignal.o xatexit.o xexit.o xmalloc.o \
-  xstrdup.o xstrerror.o
+  xmemdup.o xstrdup.o xstrerror.o
 
 $(TARGETLIB): $(REQUIRED_OFILES) $(EXTRA_OFILES) $(LIBOBJS) $(ALLOCA)
 	rm -f $(TARGETLIB)
@@ -270,5 +270,6 @@ strsignal.o: config.h $(INCDIR)/libiberty.h
 xatexit.o: $(INCDIR)/libiberty.h
 xexit.o: $(INCDIR)/libiberty.h
 xmalloc.o: $(INCDIR)/libiberty.h
+xmemdup.o: config.h $(INCDIR)/libiberty.h
 xstrdup.o: config.h $(INCDIR)/libiberty.h
 xstrerror.o: config.h $(INCDIR)/libiberty.h

libiberty/makefile.vms

@@ -10,7 +10,7 @@
 OBJS=bcopy.obj,bcmp.obj,getopt.obj,obstack.obj,xexit.obj,xmalloc.obj,hex.obj,\
    getopt1.obj,cplus-dem.obj,strncasecmp.obj,strcasecmp.obj,strdup.obj,\
    concat.obj,getruntime.obj,getpagesize.obj,alloca.obj,xstrerror.obj,\
-   xstrdup.obj,xatexit.obj,choose-temp.obj,fnmatch.obj,objalloc.obj
+   xmemdup.obj,xstrdup.obj,xatexit.obj,choose-temp.obj,fnmatch.obj,objalloc.obj
 
 ifeq ($(CC),gcc)
 CFLAGS=/include=([],[-.include])

libiberty/vmsbuild.com

@@ -15,7 +15,7 @@ $! manually copied from Makefile.in
 $ REQUIRED_OFILES = "argv.o basename.o choose-temp.o concat.o cplus-dem.o "-
 	+ "fdmatch.o fnmatch.o getopt.o getopt1.o getruntime.o hex.o "-
 	+ "floatformat.o objalloc.o obstack.o spaces.o strerror.o strsignal.o "-
-	+ "xatexit.o xexit.o xmalloc.o xstrdup.o xstrerror.o"
+	+ "xatexit.o xexit.o xmalloc.o xmemdup.o xstrdup.o xstrerror.o"
 $! anything not caught by link+search of dummy.* should be added here
 $ EXTRA_OFILES = ""
 $!

libiberty/xmemdup.c

@@ -0,0 +1,20 @@
+/* xmemdup.c -- Duplicate a memory buffer, using xcalloc.
+   This trivial function is in the public domain.
+   Jeff Garzik, September 1999.  */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "ansidecl.h"
+#include "libiberty.h"
+
+PTR
+xmemdup (input, copy_size, alloc_size)
+  const PTR input;
+  size_t copy_size;
+  size_t alloc_size;
+{
+  PTR output = xcalloc (1, alloc_size);
+  memcpy (output, input, copy_size);
+  return output;
+}