[#BloombergLP-bdlde-Utf8CheckingInStreamBufWrapper-showmanyc]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlde.adoc[bdlde]::xref:BloombergLP/bdlde/Utf8CheckingInStreamBufWrapper.adoc[Utf8CheckingInStreamBufWrapper]::showmanyc
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:mrdocs:

Return the number of bytes that are guaranteed that can be read before `underflow` returns `eof`&period; If the object is not in a valid state, &hyphen;1 will be returned&period; Note that often, the actual number of bytes that can be read will be much greater than the value returned by this function&period;

== Synopsis

Declared in `&lt;bdlde&lowbar;utf8checkinginstreambufwrapper&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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virtual
std::streamsize
showmanyc() override;
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[.small]#Created with https://www.mrdocs.com[MrDocs]#
