[Bug middle-end/111659] document that -Wstrict-flex-arrays depends on -ftree-vrp

[crrodriguez at opensuse dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111659

--- Comment #3 from Cristian Rodríguez <crrodriguez at opensuse dot org> ---
Example code that emits no warning (in case if there is of any interest)

curl -LO https://www.netlib.org/fp/dtoa.c

gcc-14 -Og -c -Warray-bounds -fstrict-flex-arrays -Werror=strict-flex-arrays
-DIEEE_8087 dtoa.c