[Bug middle-end/108448] GCC Elides Assignment to Pointer and memcpy

[gavin at yzena dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108448

--- Comment #5 from Gavin Howard <gavin at yzena dot com> ---
As mentioned, it works at -O0, and UBSan reports nothing until the segfault.
ASan also reports nothing. Valgrind also reports nothing. They all report
nothing at -O0 and -O2.

I keep my code clean of such things during development, which is one reason I
am so confused.

I'll get the amalgamation to you, but it will take me some hours to do so.