Remove fallback to inline specifier from FMT_CONSTEXPR(20) macro #2075
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…e` specifiers in headers
…e` specifiers in tests
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Dec 29, 2020
| template <> FMT_CONSTEXPR const char* get_units<std::peta>() { return "Ps"; } | ||
| template <> FMT_CONSTEXPR const char* get_units<std::exa>() { return "Es"; } | ||
| template <> FMT_CONSTEXPR const char* get_units<std::ratio<60>>() { | ||
| template <> FMT_CONSTEXPR inline const char* get_units<std::atto>() { |
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Can we remove inline from all these functions? Ideally all of this should be rewritten without template specializations but this is out of scope of the current PR.
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It causes multiple definitions of these functions.
Maybe a test for multiple definitions can be added, which would include all headers in two object files and link them together. Because now I have to include chrono.h into util.h in the test directory to get this error.
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Makes sense. I don't think the multiple definition test is necessary.
…d `inline` specifiers" This reverts commit f35325e
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As it was discussed here - #2056 (comment), an fallback to the
inlineinsideFMT_CONSTEXPR(20)macro definitions is not always a good solution. Especially whenFMT_CONSTEXPR(20)macro should be used together withFMT_INLINEmacro, in C++11 they both expand toinlinespecifier.In this PR I removed that fallback to
inlineand placedinlinespecifiers where it's needed (for non-template, not member or friend defined in class/struct/union functions), so everything should stay the same in C++11. WhenFMT_CONSTEXPR(20)is expanded toconstexprall these manually-tuned functions will haveconstexpr inlinespecifiers, which is okay.