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Aborts program execution if the first macro argument does not evaluate to true in a debug build and does nothing (including not evaluating the expression) in a non-debug build. In a debug build the failure text is written to console (stderr), into the NSPR debug log, and on Windows a dialog box is opened.  There is no way to prevent such an abort from happening without modifying source code and recompiling, so use this macro only when you are sure the given condition is always true.


NS_ABORT_IF_FALSE(expressionToTest, "error text");

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Contributors to this page: Waldo
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