https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78763
--- Comment #12 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> --- Author: ian Date: Tue Jan 24 03:34:14 2017 New Revision: 244852 URL: https://gcc.gnu.org/viewcvs?rev=244852&root=gcc&view=rev Log: PR go/78763 Backported from mainline: compiler: call determine_types even for constant expressions We need to call determine_types even for constant expressions, since a constant expression may include code like unsafe.Sizeof(0). Something needs to determine the type of the untyped 0, and that should be the determine_types pass. Implementing that triggered a compiler crash on test/const1.go because it permitted some erroneous constants to make it all the way to the backend. Catch that case by checking whether we get a constant overflow error, and marking the expression invalid if we do. This is a good change in any case, as previously we reported the same constant overflow error multiple times, and now we only report it once. Fixes GCC PR 78763. Reviewed-on: https://go-review.googlesource.com/34496 Modified: branches/gcc-6-branch/gcc/go/gofrontend/expressions.cc branches/gcc-6-branch/gcc/go/gofrontend/expressions.h
