Chg : The magic callbacks are now always executed in a new stack. This should have no negative impact (performance-wise or behaviour-wise) on your code, but may actually fix some obscure bugs.
Fix : [RT #107294] : Crash during install of Variable-Magic-0.58 running "t\18-opinfo.t". A recent change in the core implementation of transliterations caused an undefined behaviour when it interacted with this module, which resulted in visible stack corruption on Win32 perls compiled with MSVC when the op_info feature was enabled. This was fixed by using a separate stack for the magic callbacks. Thanks Peter Stokes for reporting and providing greatly helpful feedback.
Fix : The object op_info feature will now handle correctly Unicode transliteration, multideref and custom ops.