calls.c (special_function_p): Remove `realloc' and add `strdup' to the list of…

calls.c (special_function_p): Remove `realloc' and add `strdup' to the list of functions which have attribute...

        * calls.c (special_function_p): Remove `realloc' and add `strdup'
        to the list of functions which have attribute malloc by default.

From-SVN: r30731

gcc/ChangeLog

 1999-11-30  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
+	* calls.c (special_function_p): Remove `realloc' and add `strdup'
+	to the list of functions which have attribute malloc by default.
+
+1999-11-30  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
 	* c-lex.c (yylex): With -Wtraditional, when the ANSI type of an
 	integer constant does not match the traditional type, limit the
 	warnings to cases where the base of the type is ten.

gcc/calls.c

@@ -607,10 +607,12 @@ special_function_p (name, fndecl, returns_twice, is_longjmp,
 	       && ! strcmp (tname, "longjmp"))
 	*is_longjmp = 1;
       /* Do not add any more malloc-like functions to this list,
-	 instead mark as malloc functions using the malloc attribute.  */
+         instead mark them as malloc functions using the malloc attribute.
+         Note, realloc is not suitable for attribute malloc since
+         it may return the same address across multiple calls. */
       else if (! strcmp (tname, "malloc")
 	       || ! strcmp (tname, "calloc")
-	       || ! strcmp (tname, "realloc")
+	       || ! strcmp (tname, "strdup")
 	       /* Note use of NAME rather than TNAME here.  These functions
 		  are only reserved when preceded with __.  */
 	       || ! strcmp (name, "__vn")	/* mangled __builtin_vec_new */