Bug 8879 – std.range function should to be usable in a pure (and sometimes nothrow) situations

Code below fail when using pure with both dmd/ldc dmdfe 2.060 ___________________________________________ This gives: /home/c135/c554.d(6): Error: pure function 'square' cannot call impure function 'zip' /home/c135/c554.d(6): Error: pure function 'square' cannot call impure function 'empty' /home/c135/c554.d(6): Error: pure function 'square' cannot call impure function 'popFront' /home/c135/c554.d(6): Error: pure function 'square' cannot call impure function 'front' --------- import std.range; import std.stdio; pure uint square( in int[] x, in int[] y ){ uint result = 0; foreach( item; zip( x, y ) ) result += item[0] * item[1]; return result; } int main(){ int[3] a = [0,1,2]; int[3] b = [1,2,3]; writefln( "Square of %s with %s give %u", a, b, square( a, b ) ); return 0; } ___________________________________________ Bearophile code ___________________________________________ This gives: test.d(3): Error: pure function 'main' cannot call impure function 'iota' --------- import std.range: iota; void main() pure { iota(10); } ___________________________________________ This gives: test.d(4): Error: pure function 'main' cannot call impure function 'map' test.d(4): Error: map is not nothrow test.d(2): Error: function D main 'main' is nothrow yet may throw --------- import std.algorithm: map; void main() pure nothrow { int[] data = [1, 2, 3]; auto r = map!q{a * a}(data); } ___________________________________________

*** This issue has been marked as a duplicate of issue 8882 ***