October 06, 2009 [Issue 3370] New: Compile-time global dynamic immutable arrays should NOT be constant-folded. | ||||
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http://d.puremagic.com/issues/show_bug.cgi?id=3370 Summary: Compile-time global dynamic immutable arrays should NOT be constant-folded. Product: D Version: 2.033 Platform: Other OS/Version: Windows Status: NEW Keywords: performance Severity: critical Priority: P2 Component: DMD AssignedTo: nobody@puremagic.com ReportedBy: dsimcha@yahoo.com --- Comment #0 from David Simcha <dsimcha@yahoo.com> 2009-10-06 15:04:05 PDT --- The following program runs out of memory b/c foo is apparently allocated and created every time through the loop: import std.math, core.memory, std.stdio; immutable real[] foo = [0,1,2,3,4]; void main() { GC.disable; foreach(i; 0..1_000_000_000) { auto bar = poly(i, foo); } } Changing the immutable to an enum results in the program still running out of memory. Removing all references to immutability fixes the problem. Changing the array to a static array fixes the problem. Initializing the array inside main() fixes the problem. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
July 25, 2010 [Issue 3370] Compile-time global dynamic immutable arrays should NOT be constant-folded. | ||||
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Posted in reply to David Simcha | http://d.puremagic.com/issues/show_bug.cgi?id=3370 David Simcha <dsimcha@yahoo.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |DUPLICATE --- Comment #1 from David Simcha <dsimcha@yahoo.com> 2010-07-25 10:09:58 PDT --- Marking as dup of bug 4298. Although this report was filed first, 4298 is were all the discussion is, and it's a somewhat better bug report. *** This issue has been marked as a duplicate of issue 4298 *** -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
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