[Bug tree-optimization/105051] consider not combining malloc + memset to calloc when inside calloc itself

[godmar at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105051

--- Comment #2 from Godmar Back <godmar at gmail dot com> ---
Thank you for your reply.  

To make sure I understand, the only work-around is to completely disable all
builtins (as in -fno-builtin), or is using `-fno-builtin-memset` as I proposed
sufficient?

I'm not sure why this bug is invalid, either. To me, applying this optimization
inside `calloc` seems invalid.