1 /**************************************************************************
3 * Copyright 2007-2013 VMware, Inc.
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28 #include "no_extern_c.h"
30 #ifndef _C99_COMPAT_H_
31 #define _C99_COMPAT_H_
40 # error "Microsoft Visual Studio 2015 or higher required"
44 * XXX: MSVC has a `__restrict` keyword, but it also has a
45 * `__declspec(restrict)` modifier, so it is impossible to define a
46 * `restrict` macro without interfering with the latter. Furthermore the
47 * MSVC standard library uses __declspec(restrict) under the _CRTRESTRICT
48 * macro. For now resolve this issue by redefining _CRTRESTRICT, but going
49 * forward we should probably should stop using restrict, especially
50 * considering that our code does not obbey strict aliasing rules any way.
59 * C99 restrict keyword
62 * - http://cellperformance.beyond3d.com/articles/2006/05/demystifying-the-restrict-keyword.html
66 /* Use C99 restrict keyword */
67 # elif defined(__GNUC__)
68 # define restrict __restrict__
69 # elif defined(_MSC_VER)
70 # define restrict __restrict
72 # define restrict /* */
77 /* Simple test case for debugging */
79 static inline const char *
80 test_c99_compat_h(const void * restrict a,
81 const void * restrict b)
88 #endif /* _C99_COMPAT_H_ */