Hi all, I build PostgreSQL 9.6.5 by Visual Studio 2013 on Windows, I found weird behavior on it.
I execute following SQL, occurring ERROR is expected, but I got mysterious
value 1.
postgres=# select (float8 'inf')::numeric;
numeric
---------
1
(1 row)
On Windows, at least Visual Studio, the string of float/double value meaning
infinity is "1.#INF" not "inf". So, set_var_from_str() called from
float8_numeric()
in utils/adt/numeric.c will return numeric value 1, and no one checks this
situation.
This situation is also occurring by cast from float4.
I wrote a patch to add check this situation.
Please find attached.
Sincerely,
--
Taiki Kondo
NEC Solution Innovators, Ltd.
fix_infinity_to_1.patch
Description: fix_infinity_to_1.patch
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