[Bug c/107557] [12/13 Regression] ICE -fsanitize=undefined and VLA as argument type to a function

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107557

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
This hints at VLA gimplification not working properly, aka a missed DECL_EXPR
from the frontend.