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Vinson Lee wrote:
> Module: Mesa
> Branch: glsl2
> Commit: a0b0afc6944b00df27145a96ad2727a36752e1d6
> URL:
> http://cgit.freedesktop.org/mesa/mesa/commit/?id=a0b0afc6944b00df27145a96ad2727a36752e1d6
>
> Author: Vinson Lee <v...@vmware.com>
> Date: Sun Aug 15 13:08:15 2010 -0700
>
> mesa: Check that _XOPEN_SOURCE is defined before using it.
Does MSVC actually fail on that? I believe that even C89 says that
undefined preprocessor variables be treated has having value 0 in
preprocessor statements. We looked at this quite a bit when writing the
GLSL preprocessor. :)
> ---
>
> src/mesa/main/imports.h | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/src/mesa/main/imports.h b/src/mesa/main/imports.h
> index a439370..e967b14 100644
> --- a/src/mesa/main/imports.h
> +++ b/src/mesa/main/imports.h
> @@ -120,7 +120,7 @@ typedef union { GLfloat f; GLint i; } fi_type;
> * \name Work-arounds for platforms that lack C99 math functions
> */
> /*...@{*/
> -#if (_XOPEN_SOURCE < 600) && !defined(_ISOC99_SOURCE) \
> +#if (defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE < 600)) &&
> !defined(_ISOC99_SOURCE) \
> && (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L)) \
> && (!defined(_MSC_VER) || (_MSC_VER < 1400))
> #define acosf(f) ((float) acos(f))
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