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Bug 8804 – countUntil warning on an infinite range

Status: RESOLVED
Resolution: FIXED
Severity: minor
Priority: P2
Component: phobos
Product: D
Version: D2
Platform: x86
OS: Windows
Creation time: 2012-10-11T14:34:00Z
Last change time: 2012-12-16T23:11:49Z
Keywords: diagnostic
Assigned to: monarchdodra
Creator: bearophile_hugs

Comments

Comment #0 by bearophile_hugs — 2012-10-11T14:34:19Z

import std.range: recurrence; import std.algorithm: countUntil; void main() { auto fibs = recurrence!q{a[n-1] + a[n-2]}(1, 1); auto f20 = countUntil!(x => x >= 20)(fibs); } DMD 2.061alpha: ...\algorithm.d(4038): Warning: statement is not reachable

Comment #1 by bearophile_hugs — 2012-10-11T14:34:51Z

Of course it needs to be compiled with warnings on.

Comment #2 by monarchdodra — 2012-10-12T09:34:32Z

(In reply to comment #1) > Of course it needs to be compiled with warnings on. Nice. Compiler is *too* smart! :D I got this one (unless you had it?).

Comment #3 by bearophile_hugs — 2012-10-12T10:52:16Z

(In reply to comment #2) > (unless you had it?). It's all yours. I have not yet started fixing bugs.

Comment #4 by monarchdodra — 2012-12-16T23:11:49Z

https://github.com/D-Programming-Language/phobos/pull/951/files Fixed and verified by monarchdodra on 17 dec 2012.