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Silence Warnings when using FMT_STRING()

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Clang 7 (or atleast QtCreator's Clang Code Model) says:
Warning: unused member function 'operator basic_string_view'
[-Wunused-member-function]

And MinGW 8.1 says:
Warning: typedef '<Name where Macro is used>::<lambda()>::str::char_type' locally defined but not used
[-Wunused-local-typedefs]
This commit is contained in:
Björn Schäpers 2019-02-12 20:09:06 +01:00
parent 9e554999ce
commit 1e67e10a9a
2 changed files with 18 additions and 2 deletions
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16
include/fmt/core.h
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@ -111,6 +111,22 @@
# define FMT_USE_NULLPTR 0
#endif
#ifndef FMT_MAYBE_UNUSED
# ifdef __has_cpp_attribute
# if __has_cpp_attribute(maybe_unused)
# define FMT_MAYBE_UNUSED [[maybe_unused]]
# endif
# else
# if (__cplusplus >= 201603L && FMT_GCC_VERSION >= 700) || \
FMT_MSC_VER >= 1911
# define FMT_MAYBE_UNUSED [[maybe_unused]]
# endif
# endif
#endif
#ifndef FMT_MAYBE_UNUSED
# define FMT_MAYBE_UNUSED
#endif
// Check if exceptions are disabled.
#ifndef FMT_EXCEPTIONS
# if (defined(__GNUC__) && !defined(__EXCEPTIONS)) || \

4
include/fmt/format.h
View File

@ -3514,8 +3514,8 @@ FMT_END_NAMESPACE
typedef typename std::remove_cv<std::remove_pointer< \
typename std::decay<decltype(s)>::type>::type>::type ct; \
struct str : fmt::compile_string { \
typedef ct char_type; \
FMT_CONSTEXPR operator fmt::basic_string_view<ct>() const { \
FMT_MAYBE_UNUSED typedef ct char_type; \
FMT_MAYBE_UNUSED FMT_CONSTEXPR operator fmt::basic_string_view<ct>() const { \
return {s, sizeof(s) / sizeof(ct) - 1}; \
} \
}; \