merge from gcc

3 files changed, 20 insertions, 5 deletions

diff --git a/include/ChangeLog b/include/ChangeLog
index 918098d..fe64d5b 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,9 @@
+2004-09-04  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* ansidecl.h (ATTRIBUTE_SENTINEL): Define.
+	* libiberty.h (concat, reconcat, concat_length, concat_copy,
+	concat_copy2): Use ATTRIBUTE_SENTINEL.
+
 2004-08-13  Alan Modra  <amodra@bigpond.net.au>
 
 	* bfdlink.h (struct bfd_link_callbacks): Remove "error_handler".
diff --git a/include/ansidecl.h b/include/ansidecl.h
index ccf0b27..04c3a30 100644
--- a/include/ansidecl.h
+++ b/include/ansidecl.h
@@ -322,6 +322,15 @@ So instead we use the macro below and test it against specific values.  */
 # define ATTRIBUTE_NULL_PRINTF_5 ATTRIBUTE_NULL_PRINTF(5, 6)
 #endif /* ATTRIBUTE_NULL_PRINTF */
 
+/* Attribute `sentinel' was valid as of gcc 3.5.  */
+#ifndef ATTRIBUTE_SENTINEL
+# if (GCC_VERSION >= 3005)
+#  define ATTRIBUTE_SENTINEL __attribute__ ((__sentinel__))
+# else
+#  define ATTRIBUTE_SENTINEL
+# endif /* GNUC >= 3.5 */
+#endif /* ATTRIBUTE_SENTINEL */
+
 /* We use __extension__ in some places to suppress -pedantic warnings
    about GCC extensions.  This feature didn't work properly before
    gcc 2.8.  */
diff --git a/include/libiberty.h b/include/libiberty.h
index a90b4dd..4aab80b 100644
--- a/include/libiberty.h
+++ b/include/libiberty.h
@@ -93,7 +93,7 @@ extern char *lrealpath PARAMS ((const char *));
    the last argument of this function, to terminate the list of
    strings.  Allocates memory using xmalloc.  */
 
-extern char *concat PARAMS ((const char *, ...)) ATTRIBUTE_MALLOC;
+extern char *concat PARAMS ((const char *, ...)) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
 
 /* Concatenate an arbitrary number of strings.  You must pass NULL as
    the last argument of this function, to terminate the list of
@@ -102,27 +102,27 @@ extern char *concat PARAMS ((const char *, ...)) ATTRIBUTE_MALLOC;
    pointer to be freed after the new string is created, similar to the
    way xrealloc works.  */
 
-extern char *reconcat PARAMS ((char *, const char *, ...)) ATTRIBUTE_MALLOC;
+extern char *reconcat PARAMS ((char *, const char *, ...)) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
 
 /* Determine the length of concatenating an arbitrary number of
    strings.  You must pass NULL as the last argument of this function,
    to terminate the list of strings.  */
 
-extern unsigned long concat_length PARAMS ((const char *, ...));
+extern unsigned long concat_length PARAMS ((const char *, ...)) ATTRIBUTE_SENTINEL;
 
 /* Concatenate an arbitrary number of strings into a SUPPLIED area of
    memory.  You must pass NULL as the last argument of this function,
    to terminate the list of strings.  The supplied memory is assumed
    to be large enough.  */
 
-extern char *concat_copy PARAMS ((char *, const char *, ...));
+extern char *concat_copy PARAMS ((char *, const char *, ...)) ATTRIBUTE_SENTINEL;
 
 /* Concatenate an arbitrary number of strings into a GLOBAL area of
    memory.  You must pass NULL as the last argument of this function,
    to terminate the list of strings.  The supplied memory is assumed
    to be large enough.  */
 
-extern char *concat_copy2 PARAMS ((const char *, ...));
+extern char *concat_copy2 PARAMS ((const char *, ...)) ATTRIBUTE_SENTINEL;
 
 /* This is the global area used by concat_copy2.  */