[Bug c++/64527] Constructor for empty struct not called in some situations

[gcc at swtaarrs dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64527

--- Comment #1 from Brett Simmers <gcc at swtaarrs dot com> ---
Sorry, the attachment should be named ctor.cpp. I didn't realize it was a
filename and not a text description.