Details

This message is generated when external evaluation leads to an expression of an unexpected type.
External evaluation is used to obtain values for symbols and functions that are not handled within the CompiledFunction interpreter.
Off[message] switches off the message; On[message] switches it on. For example: Off[CompiledFunction::cfse].

Examples

The compiler assumes by default that the value of the global symbol will be a real number:

Wolfram Language code: cf = Compile[{}, x + 1]

Wolfram Language code: Block[{x = 1.7 + 3.2I}, cf[]]

The third argument in Compile can be used to specify the return type of external evaluations:

Wolfram Language code: cf = Compile[{}, x + 1, {{x, _Complex}}]

Wolfram Language code: Block[{x = 1.7 + 3.2I}, cf[]]

Clear the value of cf:

Wolfram Language code: Clear[cf]

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