Change in behavior in inline variable handling between clang version

[jfalcou]

Repro code :
https://godbolt.org/z/bnbof95oo

Removing inline from the declaration of my_wrapper seems to cause the issue to go away.
ASAN and UB santiizers report nothing

[vitalybuka]

There is UB report https://godbolt.org/z/3n8zs5vqz

[vitalybuka]

There is UB report https://godbolt.org/z/3n8zs5vqz

But it looks bogus.

[jfalcou]

Yeah the fact the pointer is null is the actual issue I think. It wasn't there in older clang version.

[shafik]

Looks like this stated with clang-9: https://godbolt.org/z/8Y4eaEYcj

CC @AaronBallman