https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112604
--- Comment #2 from Jakub Jermar <jakub at jermar dot eu> --- Created attachment 56632 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56632&action=edit Requested object and preprocessed source files Here are the bad and good object and preprocessed sources fies for vfs_file.c. Note that the difference between the good and bad version is -O3 (bad) v.s -O2 (good), but it was the same compiler. I am not sure this is going to be very helpful as with -O2 the code is quite different and the offending function is not inlined. If desired, I may try to go back to GCC 8.2 (the last good version known to me) and try to provide a good file generated with the same compiler flags. Let me know if this would be more useful. I also attached the entire binary of the VFS server, both good and bad versions. Note these are HelenOS binaries and need to be run in the environment of the HelenOS operating system, which might not be practical for you.