| From: | Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: draft patch for strtof() |
| Date: | 2019-01-17 23:50:13 |
| Message-ID: | 87ef9aj27b.fsf@news-spur.riddles.org.uk |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
>>>>> "Andrew" == Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> writes:
Andrew> Because it turns out that Windows (at least the version running
Andrew> on Appveyor) completely fucks this up; strtof() is apparently
Andrew> returning infinity or zero _without setting errno_ for values
Andrew> out of range for float: input of "10e70" returns +inf with no
Andrew> error, input of "10e-70" returns (exactly) 0.0 with no error.
This bug turns out to be dependent on compiler/SDK versions, not
surprisingly. So far I have figured out how to invoke these combinations
on appveyor:
VS2013 / SDK 7.1 (as per cfbot): fails
VS2015 / SDK 8.1: works
Trying to figure out how to get other combinations to test.
--
Andrew (irc:RhodiumToad)
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