failed test float8 on mingw

Hi,

Trying to review some patches on windows... mingw: 5.1.4; msys:
1.0.10; gcc 3.4.5
This is not current head but this morning snapshot tarball... but i
saw this same error with yesterday tarball...

I get this failure on regression tests:

expected output:
 SELECT '10e-400'::float8;
! ERROR:  "10e-400" is out of range for type double precision
! LINE 1: SELECT '10e-400'::float8;
!                ^ SELECT '-10e-400'::float8;
! ERROR:  "-10e-400" is out of range for type double precision
! LINE 1: SELECT '-10e-400'::float8;
!

actual result output:
 SELECT '10e-400'::float8;
!  float8
! --------
!       0
! (1 row)
! SELECT '-10e-400'::float8;
!  float8
! --------
!       0
! (1 row)


--
Atentamente,
Jaime Casanova
Soporte y capacitación de PostgreSQL
Asesoría y desarrollo de sistemas
Guayaquil - Ecuador
Cel. +59387171157