missing define in /usr/include/fenv.h ?

[Dima Pasechnik]

Dear all,

/usr/include/fenv.h is not protected from double inclusion.
I.e., there is no
#define _FENV_H_
in it.
Is it intentional?

It breaks many things, e.g. ECL.
This is with Cygwin 1.7.9:
$ uname -a
CYGWIN_NT-6.1 SPMS-DIMA-W7 1.7.9(0.237/5/3) 2011-03-29 10:10 i686 Cygwin

Best,
Dmitrii

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