From 8d1f1ce4124c1e0dbfc5f3d0578fbee6e24140c8 Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Mon, 12 Feb 2018 16:32:20 -0800 Subject: [PATCH] util: Add EXPLICIT_CONVERSION macro. This can be used to specify that a C++ conversion operator is not meant to be used for implicit conversions, which can lead to unintended loss of information in some cases. Implemented as a macro in order to keep old GCC versions happy. Reviewed-by: Plamena Manolova --- src/util/macros.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/util/macros.h b/src/util/macros.h index e3c785af508..6d3df904082 100644 --- a/src/util/macros.h +++ b/src/util/macros.h @@ -285,4 +285,14 @@ do { \ #define MIN3( A, B, C ) ((A) < (B) ? MIN2(A, C) : MIN2(B, C)) #define MAX3( A, B, C ) ((A) > (B) ? MAX2(A, C) : MAX2(B, C)) +/** + * Macro for declaring an explicit conversion operator. Defaults to an + * implicit conversion if C++11 is not supported. + */ +#if __cplusplus >= 201103L +#define EXPLICIT_CONVERSION explicit +#elif defined(__cplusplus) +#define EXPLICIT_CONVERSION +#endif + #endif /* UTIL_MACROS_H */ -- 2.30.2