[#BloombergLP-bdlbb-OutBlobStreamBuf-underflow]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlbb.adoc[bdlbb]::xref:BloombergLP/bdlbb/OutBlobStreamBuf.adoc[OutBlobStreamBuf]::underflow
:relfileprefix: ../../../
:mrdocs:

Return `traits_type::eof()` unconditionally.

== Synopsis

Declared in `<bdlbb_blobstreambuf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
int_type
underflow() override;
----


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