PR c++/8674

        * call.c (build_over_call): Check specifically for TARGET_EXPR
        when eliding.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@60260 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/testsuite/g++.dg/init/elide3.C b/gcc/testsuite/g++.dg/init/elide3.C
new file mode 100644 (file)
index 0000000..e6d3300
--- /dev/null
+++ b/gcc/testsuite/g++.dg/init/elide3.C
@@ -0,0 +1,30 @@
+// PR c++/8674
+
+// Bug: Since B().a is an rvalue, we tried to treat it like a TARGET_EXPR
+// and elide the copy.  But that produces a bitwise copy, which causes us
+// to abort in cp_expr_size.
+
+// Test that we actually run the A copy constructor when calling f().
+
+// { dg-do run }
+
+int c;
+
+struct A
+{
+  A () { ++c; }
+  A (const A&) { ++c; }
+};
+
+struct B
+{
+  A a;
+};
+
+void f (A) { }
+
+int main ()
+{
+  f (B().a);
+  return c < 2;
+}