https://issues.dlang.org/show_bug.cgi?id=14817
Issue ID: 14817 Summary: copy("foo", "bar") std.algorithm/std.file conflict Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: regression Priority: P1 Component: phobos Assignee: nob...@puremagic.com Reporter: thecybersha...@gmail.com /////////// test.d /////////// import std.algorithm; import std.file; void main() { copy("test.d", "test2.d"); } ////////////////////////////// C:\...\std\algorithm\mutation.d(315): Error: cannot modify immutable expression target[idx] C:\...\std\algorithm\mutation.d(323): Error: slice target[0..slen] is not mutable test.d(6): Error: template instance std.algorithm.mutation.copy!(string, string) error instantiating test.d(6): Error: std.file.copy!(string, string).copy at C:\...\std\file.d(2781) conflicts with std.algorithm.mutation.copy!(string, string).copy at C:\...\std\algorithm\mutation.d(297) This is a regression because previously the invariant of std.algorithm.mutation.copy apparently did not accept (immutable) strings as a target. This broke building Digger (along with issue 14765). Introduced in https://github.com/D-Programming-Language/phobos/pull/2799 --