https://bugs.winehq.org/show_bug.cgi?id=49598
--- Comment #3 from Sagawa sagawa.aki+winebugs@gmail.com --- This issue might be related to compiler's optimization. With -O2 binary and no WINEDEBUG, I can reproduce the issue. But, with either -O0 binary or WINEDEBUG=string, I can't reproduce the issue. I tried with gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0 on Ubuntu 20.04.