[#fmt-system_category]
= xref:fmt.adoc[fmt]::system_category
:relfileprefix: ../
:mrdocs:

== Synopsis

Declared in `<fmt/os.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::error_category const&
system_category() noexcept;
----


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