[Issue 9387] Compiler switch -O changes behavior of correct code

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=9387



--- Comment #20 from Don <clugdbug at yahoo.com.au> 2013-01-31 00:52:53 PST ---
> Don and Walter, thanks for reducing the code and fixing the bug, all on a very
short timescale!

Thanks. Optimizer bugs get top priority, and this was the one of the worst bugs
of all time. I found test cases where the executable was wrong, yet still
produced correct results in 90% of runs.
I don't think I've ever seen a bug that was so difficult to reduce.

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