SA0022: (Possibly) unassigned return value
Function | Determines all functions and methods containing an execution thread without assignment to the return value. |
Reason | An unassigned return value in a function or method indicates missing code. Even if the return value always has a default value, it is useful to explicitly assign it again in any case, in order to avoid ambiguities. |
Importance | Medium |
Sample:
FUNCTION F_Sample : DWORD
VAR_INPUT
nIn : UINT;
END_VAR
VAR
nTemp : INT;
END_VARnIn := nIn + UINT#1;
IF (nIn > UINT#10) THEN
nTemp := 1; // => SA0022
ELSE
F_Sample := DWORD#100;
END_IF