[Bug tree-optimization/112307] Segmentation fault with -O1 -fcode-hoisting

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112307

--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
You need -x c++ for the first command, otherwise the preprocessor runs as C and
will not have any C++ macros (like --cplusplus) defined.

g++ -E does *not* imply C++