[#BloombergLP-bsls-AssertTestException-expression]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bsls.adoc[bsls]::xref:BloombergLP/bsls/AssertTestException.adoc[AssertTestException]::expression
:relfileprefix: ../../../
:mrdocs:

Return a string containing the program source of the assertion that has failed.

== Synopsis

Declared in `<bsls_asserttestexception.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
char const*
expression() const;
----


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