[Bug target/83660] ICE with vec_extract inside expression statement

[kelvin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83660

--- Comment #6 from kelvin at gcc dot gnu.org ---
For what it's worth, I reconfigured my build with --enable-checking=yes,tree in
hopes that this would help us find the C++ parser code that is responsible for
creating the problematic syntax tree.  The resulting compiler produces the
exact same ICE with the same backtrace as has been captured already in these
comments.