Here, because of problems with the new warning-control code and expressions
that change location, the suppress_warning on the INDIRECT_REF didn't work.
Those problems still need to be worked out, but it's simple to avoid needing
to use suppress_warning in the first place by using a reference instead.
PR c++/104702
gcc/cp/ChangeLog:
* init.cc (build_vec_init): Use a reference for the result.
gcc/testsuite/ChangeLog:
* g++.dg/warn/Wunused-19.C: New test.
/* Now make the result have the correct type. */
if (TREE_CODE (atype) == ARRAY_TYPE)
{
- atype = build_pointer_type (atype);
+ atype = build_reference_type (atype);
stmt_expr = build1 (NOP_EXPR, atype, stmt_expr);
- stmt_expr = cp_build_fold_indirect_ref (stmt_expr);
- suppress_warning (stmt_expr /* What warning? */);
+ stmt_expr = convert_from_reference (stmt_expr);
}
return stmt_expr;
--- /dev/null
+// PR c++/104702
+// { dg-additional-options "-fno-exceptions -Wunused-value" }
+
+struct FlyString {
+ FlyString(char const*);
+ ~FlyString();
+};
+
+struct Array { FlyString __data[1]; };
+
+void frobnicate(Array&);
+
+int main() {
+ Array s_reserved_words = { "" }; // { dg-bogus "value computed is not used" }
+ frobnicate(s_reserved_words);
+}