File force_fit_type.patch of Package libgcj41

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File force_fit_type.patch of Package libgcj41

* stor-layout.c (set_sizetype): Set TYPE_MAX_VALUE properly
	for sizetype when sizetype is unsigned.

Index: gcc/stor-layout.c
===================================================================
*** gcc/stor-layout.c	(revision 111145)
--- gcc/stor-layout.c	(working copy)
*************** set_sizetype (tree type)
*** 2018,2023 ****
--- 2018,2042 ----
        ssizetype = sizetype;
        sbitsizetype = bitsizetype;
      }
+ 
+   /* If SIZETYPE is unsigned, we need to fix TYPE_MAX_VALUE so that
+      it is sign extended in a way consistent with force_fit_type.  */
+   if (TYPE_UNSIGNED (type))
+     {
+       tree orig_max, new_max;
+ 
+       orig_max = TYPE_MAX_VALUE (sizetype);
+ 
+       /* Build a new node with the same values, but a different type.  */
+       new_max = build_int_cst_wide (sizetype,
+ 				    TREE_INT_CST_LOW (orig_max),
+ 				    TREE_INT_CST_HIGH (orig_max));
+ 
+       /* Now sign extend it using force_fit_type to ensure
+ 	 consistency.  */
+       new_max = force_fit_type (new_max, 0, 0, 0);
+       TYPE_MAX_VALUE (sizetype) = new_max;
+     }
  }
  
  /* TYPE is an integral type, i.e., an INTEGRAL_TYPE, ENUMERAL_TYPE

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File force_fit_type.patch of Package libgcj41

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