(id_clash_len): Now unsigned.

(warn_larger_than, larger_than_size): New variables.
(main): Support -Wlarger-than-NN.

From-SVN: r6652

diff --git a/gcc/toplev.c b/gcc/toplev.c
index 4ee173c..3b3928e 100644 (file)
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -745,7 +745,14 @@ int warn_cast_align;
    characters.  The value N is in `id_clash_len'.  */
 
 int warn_id_clash;
-int id_clash_len;
+unsigned id_clash_len;
+
+/* Nonzero means warn about any objects definitions whose size is larger
+   than N bytes.  Also want about function definitions whose returned
+   values are larger than N bytes. The value N is in `larger_than_size'.  */
+ 
+int warn_larger_than;
+unsigned larger_than_size;
 
 /* Nonzero means warn if inline function is too large.  */
 
@@ -3547,6 +3554,24 @@ main (argc, argv, envp)
                  id_clash_len = atoi (str + 10);
                id_clash_lose: ;
                }
+             else if (!strncmp (p, "larger-than-", 12))
+               {
+                 char *endp = p + 12;
+
+                 while (*endp)
+                   {
+                     if (*endp >= '0' && *endp <= '9')
+                       endp++;
+                     else
+                       {
+                         error ("Invalid option `%s'", argv[i]);
+                         goto larger_than_lose;
+                       }
+                   }
+                 warn_larger_than = 1;
+                 larger_than_size = atoi (str + 13);
+               larger_than_lose: ;
+               }
              else
                error ("Invalid option `%s'", argv[i]);
            }