Bug 9123 – std.algorithm.reduce is not pure nothrow on const array

In this program spam1 and spam2 differ because 'items' is const in spam2: import std.algorithm: reduce; struct Foo {} immutable Foo zero; static Foo bar(Foo, Foo) pure nothrow { return zero; } void spam1(Foo[] items) pure nothrow { reduce!bar(zero, items); } void spam2(const Foo[] items) pure nothrow { reduce!bar(zero, items); } void main() {} Expected: both spam1 and spam2 allowed to be pure nothrow. But DMD 2.061alpha gives: test.d(11): Error: pure function 'spam2' cannot call impure function 'reduce' test.d(11): Error: reduce is not nothrow test.d(10): Error: function test.spam2 'spam2' is nothrow yet may throw

Don't know when fixed, but the snippet works fine now in head.