Debugging macro to terminate the application if the assertion fails. If the assertion fails (i.e. the expression is not true), an error message is logged and the application is terminated.
The macro can be turned off in final releases of code by defining
G_DISABLE_ASSERT when compiling the application, so code must
not depend on any side effects from
expr. Similarly, it must not be used
in unit tests, otherwise the unit tests will be ineffective if compiled with
g_assert_true() and related macros in unit tests instead.