[Bug sanitizer/65400] tsan mis-compiles inlineable C functions

[bernd.edlinger at hotmail dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65400

--- Comment #5 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Created attachment 35033
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35033&action=edit
stripped down second test case

For completeness, here is the stripped down test case for the tail call flag.

It reproduces with current trunk and:
[-O2|-Os] -fsanitize=treand[,undefined]

not with -O1 and not with -O3, and not in january either :)