* c-decl.c (start_decl): Initialized variables are not common.

From-SVN: r50250

gcc/c-decl.c

@@ -3476,7 +3476,7 @@ start_decl (declarator, declspecs, initialized, attributes)
      initializer equal to zero.  (Section 3.7.2)
      -fno-common gives strict ANSI behavior.  Usually you don't want it.
      This matters only for variables with external linkage.  */
-  if (! flag_no_common || ! TREE_PUBLIC (decl))
+  if (!initialized && (! flag_no_common || ! TREE_PUBLIC (decl)))
     DECL_COMMON (decl) = 1;
 
   /* Set attributes here so if duplicate decl, will have proper attributes.  */

gcc/testsuite/gcc.c-torture/compile/20020303-1.c

@@ -0,0 +1,5 @@
+/* With -fzero-initialized-in-bss, we made I a common symbol instead
+   of a symbol in the .bss section.  Not only does that break semantics,
+   but a common symbol can't be weak.  */
+
+int i __attribute__((weak)) = 0;