[Bug c/29970] mixing ({...}) with VLA leads to massive breakage

[muecker at gwdg dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29970

--- Comment #18 from Martin Uecker <muecker at gwdg dot de> ---
What is not fixed is returning structs with VLA members as in the first three
test cases, e.g. the second one still ICEs.