diff options
Diffstat (limited to 'gcc-4.9/libstdc++-v3/include/c_compatibility/complex.h')
| -rw-r--r-- | gcc-4.9/libstdc++-v3/include/c_compatibility/complex.h | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/gcc-4.9/libstdc++-v3/include/c_compatibility/complex.h b/gcc-4.9/libstdc++-v3/include/c_compatibility/complex.h index d072b68a8..b15361ea0 100644 --- a/gcc-4.9/libstdc++-v3/include/c_compatibility/complex.h +++ b/gcc-4.9/libstdc++-v3/include/c_compatibility/complex.h @@ -26,21 +26,29 @@ * This is a Standard C++ Library header. */ -#include <bits/c++config.h> +#ifndef _GLIBCXX_COMPLEX_H +#define _GLIBCXX_COMPLEX_H 1 #if __cplusplus >= 201103L # include <ccomplex> +#else // C++98 and C++03 + +// The C++ <complex> header is incompatible with the C99 <complex.h> header, +// they cannot be included into a single translation unit portably. Notably, +// C++11's <ccomplex> does not include C99's <complex.h> and in C++11's +// <complex.h> is defined to provide only what C++11's <ccomplex> does in a +// different namespace. +#ifdef _GLIBCXX_COMPLEX +# error Cannot include both <complex> and C99's <complex.h> #endif -#if _GLIBCXX_HAVE_COMPLEX_H -# include_next <complex.h> -# ifdef _GLIBCXX_COMPLEX -// See PR56111, keep the macro in C++03 if possible. -# undef complex -# endif -#endif +// Delegate to a system complex.h if we don't provide it as part of the C++ +// implementation. +#include_next <complex.h> -#ifndef _GLIBCXX_COMPLEX_H -#define _GLIBCXX_COMPLEX_H 1 +// Provide a define indicating that a C99-style <complex.h> has been included. +#define _GLIBCXX_C99_COMPLEX_H + +#endif // C++98 and C++03 #endif |