Bug 2455 – Cannot use .ptr or .length in asm code

This was first reported in #1125 as failed workaround. I'm moving it here since the original bug in #1125 was fixed long ago. It's in dstress as: http://dstress.kuehne.cn/run/t/tuple_23_C.d It's probably related to #1252, #1172, and #1173. It seems that fullstops ('.') are not treated correctly. #1500 may also be related. void foo(int [] q) { asm{ mov EAX, q.ptr; // mov ECX, q.length; // this doesn't work either } } There aren't any good workarounds for this. Creating a local variable and using 'naked' are the two best options, but they're both ugly.

D expressions allowed as asm operands must give either directly a variable or must evaliate to a constant known at compile time (limited to type property for now). .length / .ptr is already more complex and requires an offset.