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Bug 7591 – Wrong const-folding comparisons involving complex nans

Status: RESOLVED
Resolution: FIXED
Severity: major
Priority: P2
Component: dmd
Product: D
Version: D2
Platform: All
OS: All
Creation time: 2012-02-26T08:07:00Z
Last change time: 2015-06-09T05:11:37Z
Keywords: pull, wrong-code
Assigned to: yebblies
Creator: yebblies

Comments

Comment #0 by yebblies — 2012-02-26T08:07:26Z

When compiled with -inline, the backend will attempt to const-fold the comparison and get the wrong result. cfloat get() { return cfloat.nan; } void main() { assert(!(get() == 0)); }

Comment #1 by yebblies — 2012-02-26T08:38:04Z

https://github.com/D-Programming-Language/dmd/pull/769

Comment #2 by bugzilla — 2012-05-19T13:28:41Z

Works in DMD 2.060.

Comment #3 by yebblies — 2012-07-10T23:55:26Z

https://github.com/D-Programming-Language/dmd/commit/b2b0585311e5b887eaf110231a3de06e86e68bd8