On Wednesday, 21 December 2016 at 15:40:42 UTC, Andrei
Alexandrescu wrote:
On 12/20/2016 05:49 PM, Andrei Alexandrescu wrote:
https://github.com/dlang/dlang.org/pull/1528 -- Andrei
Dropped the void functions. On to the next scandal:
A function that accepts only parameters without mutable
indirections and
returns a result that has mutable indirections is called a $(I
pure factory
function). An implementation may assume that all mutable memory
returned by
the call is not referenced by any other part of the program,
i.e. it is
newly allocated by the function.
Andrei
Couldn't this be folded into :
"The implementation may not remove a call to a pure function if
does allocate memory ?"
Since there is the concept of weakly pure functions the compiler
cannot decide to remove functions on signature alone.
Meaning the body has to be available for it to even attempt to
elide the call.
Therefore specifying implementation behavior based on the
function signature is misleading IMO.
