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

Synchronizing the stream buffer.

== Synopsis

Declared in `<bslstl_istringstream.h>`

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

== Description

If `rdbuf()` is a null pointer, returns ‐1.

Otherwise, calls `rdbuf()‐>pubsync(),` and if that returns ‐1, sets badbit and returns ‐1.

Otherwise, returns 0.

[NOTE]
====
This function does not count the number of characters extracted, if any, and therefore does not affect the next call to `gcount().`

====

== Return Value

0 on success, ‐1 on failure


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