Dave Rigby 2a4c34b878 Allow forward-declaration of level_enum ... spdlog::level::level_enum cannot be forward-declared at present, as the definition does not specify an underlying type. To allow users to make use of <spdlog/fwd.h> to refer to level::level_enum without pulling in all of <spdlog/common.h> (which can be quite costly), specify an underlying type (int) for level::level_enum, then add a forward-declaration for it to spdlog/fwd.h. Note this required explicitly casting level_enum to size_t within ansicolor_sink due to sign-conversion errors: implicit conversion changes signedness: 'const level::level_enum' to 'std::__1::array::size_type' (aka 'unsigned long') [-Wsign-conversion] It would appear that an enum with an unspecified underlying type is in some kind of superposition - it can be treated as both signed _and_ unsigned - using an underlying type of 'unsigned int' triggers even more warnings of this kind...		2022-01-11 15:12:23 +00:00
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spdlog	Allow forward-declaration of level_enum	2022-01-11 15:12:23 +00:00