Variable declaration after goto Label

February 5, 2023 by Tarik

The syntax simply doesn’t allow it. §6.8.1 Labeled Statements:

labeled-statement:
    identifier : statement
    case constant-expression : statement
    default : statement

Note that there is no clause that allows for a “labeled declaration”. It’s just not part of the language.

You can trivially work around this, of course, with an empty statement.

JUMP:;
int a = 0;