[Bug middle-end/78429] [6/7 Regression] ice on valid C code on x86_64-linux-gnu at -O3 in both 32-bit and 64-bit modes (internal compiler error: in set_value_range, at tree-vrp.c:361)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78429

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
The following made them signed (but not precision 1).

https://gcc.gnu.org/ml/gcc-patches/2015-10/msg03030.html