[#XDCHECK]
= XDCHECK
:mrdocs:

Assert that a condition is true in debug builds only.

== Synopsis

Declared in `<folly/logging/xlog.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
#define XDCHECK(cond, ...)

----

== Description

When NDEBUG is not defined this behaves like XCHECK(). When NDEBUG is defined XDCHECK statements are not evaluated and will never log.

You can use `XLOG_IF(DFATAL, condition)` instead if you want the condition to be evaluated in release builds but log a message without crashing the program.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *cond*
| The condition expression that must evaluate to true.
|===


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