[#bsl-basic_syncbuf-sync]
= xref:bsl.adoc[bsl]::xref:bsl/basic_syncbuf.adoc[basic_syncbuf]::sync
:relfileprefix: ../../
:mrdocs:

Request the wrapped streambuf flush on the next `emit` call, then call `emit` if the "emit‐on‐sync" flag is `true`. Return 0 on success and ‐1 if the `emit` call has failed.

== Synopsis

Declared in `<bslstl_syncbuf.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
sync() override;
----


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