void (*f)(int, ...); is a valid declaration and should convert to English as something like declare f as pointer to function (int, ...) returning void but the output from cdecl is a syntax error, as shown in the image below.

https://cdecl.org/?q=void+%28*f%29%28int%2C+...%29%3B
void (*f)(int, ...);is a valid declaration and should convert to English as something likedeclare f as pointer to function (int, ...) returning voidbut the output from cdecl is a syntax error, as shown in the image below.https://cdecl.org/?q=void+%28*f%29%28int%2C+...%29%3B