[#BloombergLP-bslx-TestOutStream-makeNextInvalid]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslx.adoc[bslx]::xref:BloombergLP/bslx/TestOutStream.adoc[TestOutStream]::makeNextInvalid
:relfileprefix: ../../../
:mrdocs:

Make the next output operation externalize the invalid data indicator, as opposed to the actual type indicator, to this output stream; the data associated with the next output operation is still externalized. Note that the invalid data indicator can be detected by a corresponding `TestInStream` object.

== Synopsis

Declared in `<bslx_testoutstream.h>`

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


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