May 29, 2026
9:50 a.m.
Applications may inline the IsThreadAFiber function which checks wether the FiberData field is the constant 0x1E00. Since Wine didn't set it to this value, applications would think the thread is a fiber and attempt to dereference the value, causing a segfault. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=59296 -- https://gitlab.winehq.org/wine/wine/-/merge_requests/11027