[vm] reserve status code for future use

Author: zekun000

language/move-core/types/src/vm_status.rs

@@ -498,6 +498,12 @@ pub enum StatusCode {
     SEQUENCE_NONCE_INVALID = 29,
     // There was an error when accessing chain-specific account information
     CHAIN_ACCOUNT_INFO_DOES_NOT_EXIST = 30,
+    // Reserved error code for future use
+    RESERVED_VALIDATION_ERROR_1 = 31,
+    RESERVED_VALIDATION_ERROR_2 = 32,
+    RESERVED_VALIDATION_ERROR_3 = 33,
+    RESERVED_VALIDATION_ERROR_4 = 34,
+    RESERVED_VALIDATION_ERROR_5 = 35,
 
     // When a code module/script is published it is verified. These are the
     // possible errors that can arise from the verification process.
@@ -651,6 +657,12 @@ pub enum StatusCode {
     // Failed to resolve type due to linking being broken after verification
     TYPE_RESOLUTION_FAILURE = 2021,
     DUPLICATE_NATIVE_FUNCTION = 2022,
+    // Reserved error code for future use
+    RESERVED_INVARIANT_VIOLATION_ERROR_1 = 2023,
+    RESERVED_INVARIANT_VIOLATION_ERROR_2 = 2024,
+    RESERVED_INVARIANT_VIOLATION_ERROR_3 = 2025,
+    RESERVED_INVARIANT_VIOLATION_ERROR_4 = 2026,
+    RESERVED_INVARIANT_VIOLATION_ERROR_5 = 2027,
 
     // Errors that can arise from binary decoding (deserialization)
     // Deserializtion Errors: 3000-3999
@@ -676,6 +688,12 @@ pub enum StatusCode {
     VALUE_DESERIALIZATION_ERROR = 3023,
     CODE_DESERIALIZATION_ERROR = 3024,
     INVALID_FLAG_BITS = 3025,
+    // Reserved error code for future use
+    RESERVED_DESERIALIZAION_ERROR_1 = 3026,
+    RESERVED_DESERIALIZAION_ERROR_2 = 3027,
+    RESERVED_DESERIALIZAION_ERROR_3 = 3028,
+    RESERVED_DESERIALIZAION_ERROR_4 = 3029,
+    RESERVED_DESERIALIZAION_ERROR_5 = 3030,
 
     // Errors that can arise at runtime
     // Runtime Errors: 4000-4999
@@ -703,6 +721,12 @@ pub enum StatusCode {
     EXECUTION_LIMIT_REACHED = 4030,
     IO_LIMIT_REACHED = 4031,
     STORAGE_LIMIT_REACHED = 4032,
+    // Reserved error code for future use
+    RESERVED_RUNTIME_ERROR_1 = 4033,
+    RESERVED_RUNTIME_ERROR_2 = 4034,
+    RESERVED_RUNTIME_ERROR_3 = 4035,
+    RESERVED_RUNTIME_ERROR_4 = 4036,
+    RESERVED_RUNTIME_ERROR_5 = 4037,
 
     // A reserved status to represent an unknown vm status.
     // this is std::u64::MAX, but we can't pattern match on that, so put the hardcoded value in