Constant 1 overflows int64 when compiling expressions with int64 type parameters

[Unixeno]

When compiling expressions that involve functions with int64 type parameters, I got an error with the message:

constant 1 overflows int64

This issue appears to have been introduced by this commit

[antonmedv]

Nice catch! Looks like I forgot to delete panic call ಠ_ಠ

[antonmedv]

I've adopted your test case in #663