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<  Erlang patches mailing list  ~  unix/sys_float.c mishandles errno

Guest
Posted: Thu Jan 24, 2008 9:37 am Reply with quote
Guest
"Matthew Dempsky" <matthew@dempsky.org> writes:

> The code in unix/sys_float.c assumes that if strtod(3) sets errno to
> ERANGE then there was a problem parsing the value. However, according
> to POSIX, the actual indication of an error is that it also returned
> 0.0, HUGE_VAL, or -HUGE_VAL. This causes a problem on OS X 10.5 when
> trying to read denormalized floating-point numbers because OS X's
> strtod(3) implementation sets errno to ERANGE for denormals.
>
> The patch below changes the errno check to be consistent with POSIX.

Thanks!

We will test the patch in our daily build and include it in R12B-1
if we'll encounter no problems.

/Bjorn
--
Bj

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