https://gcc.gnu.org/bugzilla/show_bug.cgi?id=12245
--- Comment #63 from Richard Biener <rguenth at gcc dot gnu.org> --- Sth that could pay off with other testcases (nested CONSTRUCTORs) is to truncate the size of the CONSTRUCTOR_ELTS vec<> to the exact final size after parsing it as it will never grow again and we over-allocate during safe-pushing to it. vec:: has no suitable function to do that (yet) though. It won't help this particular testcase of course.
