[3.4] fix c/18282, again
Richard Henderson
rth@redhat.com
Thu Dec 23 23:52:00 GMT 2004
My test case worked by accident on ilp32 systems, but failed
properly on lp64 systems. Seems I missed a bit during the
backport from mainline.
r~
PR c/18282
* c-decl.c (finish_enum): Retain precision acquired from an attribute.
Index: c-decl.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/c-decl.c,v
retrieving revision 1.470.4.17
diff -c -p -d -r1.470.4.17 c-decl.c
*** c-decl.c 16 Nov 2004 19:55:32 -0000 1.470.4.17
--- c-decl.c 23 Dec 2004 23:49:19 -0000
*************** finish_enum (tree enumtype, tree values,
*** 5284,5292 ****
TYPE_MIN_VALUE (enumtype) = minnode;
TYPE_MAX_VALUE (enumtype) = maxnode;
- TYPE_PRECISION (enumtype) = precision;
TREE_UNSIGNED (enumtype) = unsign;
TYPE_SIZE (enumtype) = 0;
layout_type (enumtype);
if (values != error_mark_node)
--- 5284,5302 ----
TYPE_MIN_VALUE (enumtype) = minnode;
TYPE_MAX_VALUE (enumtype) = maxnode;
TREE_UNSIGNED (enumtype) = unsign;
TYPE_SIZE (enumtype) = 0;
+
+ /* If the precision of the type was specific with an attribute and it
+ was too small, give an error. Otherwise, use it. */
+ if (TYPE_PRECISION (enumtype))
+ {
+ if (precision > TYPE_PRECISION (enumtype))
+ error ("specified mode too small for enumeral values");
+ }
+ else
+ TYPE_PRECISION (enumtype) = precision;
+
layout_type (enumtype);
if (values != error_mark_node)
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