libiberty.h (concat_length, [...]): New.

include:
	* libiberty.h (concat_length, concat_copy, concat_copy2,
	libiberty_concat_ptr, ACONCAT): New.

libiberty:
	* concat.c (vconcat_length, vconcat_copy, concat_length,
	concat_copy, concat_copy2): New functions.
	(concat): Use vconcat_length/vconcat_copy.

gcc:
	* gcc.c (find_file): Use ACONCAT in lieu of alloca/strcpy/strcat.

From-SVN: r45664

2 files changed, 83 insertions, 19 deletions

diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 970dc98ad58..b68c4c5b812 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,5 +1,9 @@
 2001-09-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
+	* concat.c (vconcat_length, vconcat_copy, concat_length,
+	concat_copy, concat_copy2): New functions.
+	(concat): Use vconcat_length/vconcat_copy.
+
 	* alloca.c (libiberty_optr, libiberty_nptr, libiberty_len):
 	Define.
 
diff --git a/libiberty/concat.c b/libiberty/concat.c
index 2e31e833f4d..feed0df819b 100644
--- a/libiberty/concat.c
+++ b/libiberty/concat.c
@@ -74,38 +74,98 @@ NOTES
 #  endif
 # endif
 
-char *
-concat VPARAMS ((const char *first, ...))
+static inline unsigned long vconcat_length PARAMS ((const char *, va_list));
+static inline unsigned long
+vconcat_length (first, args)
+     const char *first;
+     va_list args;
 {
-  register size_t length;
-  register char *newstr;
-  register char *end;
-  register const char *arg;
+  unsigned long length = 0;
+  const char *arg;
 
-  /* First compute the size of the result and get sufficient memory.  */
-  VA_OPEN (args, first);
-  VA_FIXEDARG (args, const char *, first);
-  
-  length = 0;
   for (arg = first; arg ; arg = va_arg (args, const char *))
     length += strlen (arg);
 
-  VA_CLOSE (args);
-
-  newstr = (char *) xmalloc (length + 1);
+  return length;
+}
 
-  /* Now copy the individual pieces to the result string. */
-  VA_OPEN (args, first);
-  VA_FIXEDARG (args, const char *, first);
+static inline char *vconcat_copy PARAMS ((char *, const char *, va_list));
+static inline char *
+vconcat_copy (dst, first, args)
+     char *dst;
+     const char *first;
+     va_list args;
+{
+  char *end = dst;
+  const char *arg;
 
-  end = newstr;
   for (arg = first; arg ; arg = va_arg (args, const char *))
     {
-      length = strlen (arg);
+      unsigned long length = strlen (arg);
       memcpy (end, arg, length);
       end += length;
     }
   *end = '\000';
+
+  return dst;
+}
+
+unsigned long
+concat_length VPARAMS ((const char *first, ...))
+{
+  unsigned long length;
+
+  VA_OPEN (args, first);
+  VA_FIXEDARG (args, const char *, first);
+  length = vconcat_length (first, args);
+  VA_CLOSE (args);
+
+  return length;
+}
+
+char *
+concat_copy VPARAMS ((char *dst, const char *first, ...))
+{
+  char *save_dst;
+
+  VA_OPEN (args, first);
+  VA_FIXEDARG (args, char *, dst);
+  VA_FIXEDARG (args, const char *, first);
+  vconcat_copy (dst, first, args);
+  save_dst = dst; /* With K&R C, dst goes out of scope here.  */
+  VA_CLOSE (args);
+
+  return save_dst;
+}
+
+char *libiberty_concat_ptr;
+
+char *
+concat_copy2 VPARAMS ((const char *first, ...))
+{
+  VA_OPEN (args, first);
+  VA_FIXEDARG (args, const char *, first);
+  vconcat_copy (libiberty_concat_ptr, first, args);
+  VA_CLOSE (args);
+
+  return libiberty_concat_ptr;
+}
+
+char *
+concat VPARAMS ((const char *first, ...))
+{
+  char *newstr;
+
+  /* First compute the size of the result and get sufficient memory.  */
+  VA_OPEN (args, first);
+  VA_FIXEDARG (args, const char *, first);
+  newstr = (char *) xmalloc (vconcat_length (first, args) + 1);
+  VA_CLOSE (args);
+
+  /* Now copy the individual pieces to the result string. */
+  VA_OPEN (args, first);
+  VA_FIXEDARG (args, const char *, first);
+  vconcat_copy (newstr, first, args);
   VA_CLOSE (args);
 
   return newstr;