| Advanced features / Exceptions | |
Some specific Genero runtime errors are not trappable.
If a non-trappable error occurs, neither WHENEVER instructions, nor TRY/CATCH blocks can trap the error: The runtime system will display the error message to the standard error stream, file an error log record if STARTLOG was previously called, and the program is stopped.
Non-trappable errors are typically fatal errors that generally deny further program execution. For example, the errors -1320, -1328 cannot be trapped.