[#llvm-opt-OptSpecifier-2constructor-0b]
= xref:llvm.adoc[llvm]::xref:llvm/opt.adoc[opt]::xref:llvm/opt/OptSpecifier.adoc[OptSpecifier]::OptSpecifier
:relfileprefix: ../../../
:mrdocs:

Construct an invalid option specifier with ID zero.

== Synopsis

Declared in `<llvm/Option/OptSpecifier.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
OptSpecifier() = default;
----


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