gcc.h: add "restrict" macro for C++
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@ -81,6 +81,14 @@
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#ifdef __cplusplus
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#ifdef __GNUC__
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/* "__restrict__" is a GCC extension for C++ */
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#define restrict __restrict__
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#else
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/* disable it on other compilers */
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#define restrict
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#endif
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#if !defined(__clang__) && defined(__GNUC__) && !GCC_CHECK_VERSION(4,6)
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#error Your gcc version is too old. MPD requires gcc 4.6 or newer.
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#endif
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