Bug 16277 – Can't use atomicStore with classes or interface

Is this normal? ------------------------------- interface IL { } import core.atomic; void main() { IL i; shared(IL) j; atomicStore(j, i); } ------------------------------- As of DMD 2.071, this gives an error: /d391/f135.d(12): Error: template core.atomic.atomicStore cannot deduce function from argument types !()(shared(IL), IL), candidates are: /opt/compilers/dmd2/include/core/atomic.d(1100): core.atomic.atomicStore(MemoryOrder ms = MemoryOrder.seq, T, V1)(ref shared T val, V1 newval) if (__traits(compiles, () { val = newval; } )) Is that constraint { val = newval; } valid? I would have thought atomics would work with types who are just pointers, like class instances and interfaces.

That's a shared violation. You can't transfer unshared `IL i` to `shared(IL) j`, that would raise the unshared value to shared, and that would be very bad.