re PR middle-end/17411 (ICE in immed_double_const)

	PR middle-end/17411
	* tree-sra.c (generate_element_zero): Revert recent build_int_cst
	change. elt->type may be a floating point type, so use fold_convert.

	* g++.dg/opt/pr17411-1.C: New test case.

From-SVN: r87377

gcc/ChangeLog

+2004-09-11  Roger Sayle  <roger@eyesopen.com>
+
+	PR middle-end/17411
+	* tree-sra.c (generate_element_zero): Revert recent build_int_cst
+	change. elt->type may be a floating point type, so use fold_convert.
+
 2004-09-11  Geoffrey Keating  <geoffk@apple.com>
 
 	* config/darwin.c (machopic_validate_stub_or_non_lazy_ptr): Mark

gcc/testsuite/ChangeLog

+2004-09-11  Roger Sayle  <roger@eyesopen.com>
+
+	PR middle-end/17411
+	* g++.dg/opt/pr17411-1.C: New test case.
+
 2004-09-11  Joseph S. Myers  <jsm@polyomino.org.uk>
 
 	* gcc.dg/declspec-4.c, gcc.dg/declspec-5.c, gcc.dg/declspec-6.c,

gcc/testsuite/g++.dg/opt/pr17411-1.C

+// PR middle-end/17411
+// { dg-do compile }
+// { dg-options "-O2" }
+
+struct CalibData {
+  float mean_pedestal;
+};
+
+struct pair
+{
+  CalibData second;
+  pair(const CalibData& __b) : second(__b) { }
+};
+
+void insert(const pair& __x);
+
+void foo()
+{
+  insert(pair(CalibData()));
+}
+

gcc/tree-sra.c

@@ -1534,7 +1534,7 @@ generate_element_zero (struct sra_elt *elt, tree *list_p)
       tree t;
 
       gcc_assert (elt->is_scalar);
-      t = build_int_cst (elt->type, 0);
+      t = fold_convert (elt->type, integer_zero_node);
 
       t = build (MODIFY_EXPR, void_type_node, elt->replacement, t);
       append_to_statement_list (t, list_p);