rethrow (MATLAB Functions)

Reissue error

Syntax

```
rethrow(err)
```

Description

rethrow(err) reissues the error specified by err. The currently running M-file terminates and control returns to the keyboard (or to any enclosing catch block). The err argument must be a MATLAB structure containing the following character array fields.

Fieldname
Description

message
Text of the error message

identifier
Message identifier of the error message

Fieldname	Description
`message`	Text of the error message
`identifier`	Message identifier of the error message

See Message Identifiers in the MATLAB documentation for more information on the syntax and usage of message identifiers.

A convenient way to get a valid err structure for the last error issued is by using the lasterror function.

Examples

rethrow is usually used in conjunction with try-catch statements to reissue an error from a catch block after performing catch-related operations. For example,

try
   do_something
catch
   do_cleanup
   rethrow(lasterror)
end

See Also

error, lasterror, lasterr, try, catch, dbstop

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