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Bug 9171 – error optimization of expression

Status: RESOLVED
Resolution: FIXED
Severity: critical
Priority: P2
Component: dmd
Product: D
Version: D2
Platform: x86
OS: All
Creation time: 2012-12-17T02:10:00Z
Last change time: 2015-06-09T05:11:41Z
Assigned to: nobody
Creator: syavadee

Attachments

ID	Filename	Summary	Content-Type	Size
1169	bug.d	source file showing problem	text/x-dsrc	947

Comments

Comment #0 by syavadee — 2012-12-17T02:10:14Z

Created attachment 1169 source file showing problem $ dmd -O bug.d && ./bug nobug: r=0111000000000000000100000000000000000000000000000000 z=0000000000000000000010000000000000000000000000000000 bug: r=0111000000000000000100000000000000000000000000000000 z=0000000000000000000000000000000000000000000000000000 # ^ this wrong $ dmd bug.d && ./bug nobug: r=0111000000000000000100000000000000000000000000000000 z=0000000000000000000010000000000000000000000000000000 bug: r=0111000000000000000100000000000000000000000000000000 z=0000000000000000000010000000000000000000000000000000 # ^ this ok dmd 2.060, ubuntu 12.04 and windows xp

Comment #1 by clugdbug — 2012-12-17T07:34:34Z

Works for me on git head. Could be a duplicate of bug 8840.

Comment #2 by github-bugzilla — 2012-12-17T18:14:19Z

Commit pushed to dmd-1.x at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/118d3da3a9b35911afbf2eae98084f75c33802f3 fix Issue 9171 - error optimization of expression

Comment #3 by github-bugzilla — 2012-12-17T18:14:24Z

Commit pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/d4b885b88675cfdde0f1e8c92d94797d41e077ea fix Issue 9171 - error optimization of expression

Comment #4 by bugzilla — 2012-12-17T18:15:00Z

This bug has been there for over 15 years.

Comment #5 by hsteoh — 2012-12-17T18:41:18Z

Scary. Confirms that old adage about non-trivial software being never actually bug-free.

Comment #6 by bugzilla — 2012-12-17T20:55:17Z

To be fair, triggering this requires a very rare confluence of seemingly random and unrelated things, which is why it hasn't been reported before. It's appearance now suggests an expanding user base for D. Anyhow, I like to put a high priority on fixing these kinds of issues because they can be very frustrating and demoralizing to users.

Comment #7 by hsteoh — 2012-12-17T21:01:34Z

Another frustrating one is the template cross-talk one, bug 8542. It discouraged me from writing too much functional-style code, for fear that I might run into it again.