Unused exception variable in catch clauseDRT-W1692
The analyzer produces this diagnostic when a catch
clause is found, and
neither the exception parameter nor the optional stack trace parameter are
used in the catch
block.
Example
The following code produces this diagnostic because e
isn't referenced:
void f() {
try {
int.parse(';');
} on FormatException catch (e) {
// ignored
}
}
Common fixes
Remove the unused catch
clause:
void f() {
try {
int.parse(';');
} on FormatException {
// ignored
}
}