| Neg_int8 | Negative integer was positive or zero |
| Int_code | Unknown integer code while reading integer |
| Int_overflow | Overflow reading integer |
| Nat0_code | Unknown integer code while reading natural number |
| Nat0_overflow | Overflow reading natural number |
| Int32_code | Unknown integer code while reading 32bit integer |
| Int64_code | Unknown integer code while reading 64bit integer |
| Nativeint_code | Unknown integer code while reading native integer |
| Unit_code | Illegal unit value |
| Bool_code | Illegal boolean value |
| Option_code | Illegal option code |
| String_too_long | String too long |
| Variant_tag | Untagged integer encoding for variant tag |
| Array_too_long | Array too long |
| Hashtbl_too_long | Hashtable too long |
| Sum_tag of string | Illegal sum tag for given type |
| Variant of string | Illegal variant for given type |
| Poly_rec_bound of string | Attempt to read data bound through polymorphic record fields |
| Variant_wrong_type of string | Unexpected attempt to read variant with given non-variant type |
| Silly_type of string | Silly_type type_name indicates unhandled but silly case where a type of the sort type 'a type_name = 'a is used with a polymorphic variant as type parameter and included in another polymorphic variant type.
|
| Empty_type of string | Attempt to read data that corresponds to an empty type. |