pureity of closures

Stefan Koch via Digitalmars-d digitalmars-d at puremagic.com
Sun Mar 22 05:58:23 PDT 2015

dmd infers function closures impure if impure functions are 
defined within them.
even if those are never called and can never be accessed outside 
of the closure.

Example :

int a;
void closure() pure {
   impure_function() {
t.d(4): Error: pure function 't.closure.impure_function' cannot 
access mutable static data 'a'

is this intended ?

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