Revert "account/abi: handle solidity panic revert (#27868)"

This reverts commit be49691dac.

accounts/abi/abi.go

@@ -22,7 +22,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
@@ -247,37 +246,17 @@ func (abi *ABI) HasReceive() bool {
 // revertSelector is a special function selector for revert reason unpacking.
 var revertSelector = crypto.Keccak256([]byte("Error(string)"))[:4]
 
-// panicSelector is a special function selector for panic reason unpacking.
-var panicSelector = crypto.Keccak256([]byte("Panic(uint256)"))[:4]
-
-// panicReasons map is for readable panic codes
-// see this linkage for the deails
-// https://docs.soliditylang.org/en/v0.8.21/control-structures.html#panic-via-assert-and-error-via-require
-// the reason string list is copied from ether.js
-// https://github.com/ethers-io/ethers.js/blob/fa3a883ff7c88611ce766f58bdd4b8ac90814470/src.ts/abi/interface.ts#L207-L218
-var panicReasons = map[uint64]string{
-	0x00: "generic panic",
-	0x01: "assert(false)",
-	0x11: "arithmetic underflow or overflow",
-	0x12: "division or modulo by zero",
-	0x21: "enum overflow",
-	0x22: "invalid encoded storage byte array accessed",
-	0x31: "out-of-bounds array access; popping on an empty array",
-	0x32: "out-of-bounds access of an array or bytesN",
-	0x41: "out of memory",
-	0x51: "uninitialized function",
-}
-
 // UnpackRevert resolves the abi-encoded revert reason. According to the solidity
 // spec https://solidity.readthedocs.io/en/latest/control-structures.html#revert,
-// the provided revert reason is abi-encoded as if it were a call to function
+// the provided revert reason is abi-encoded as if it were a call to a function
-// `Error(string)` or `Panic(uint256)`. So it's a special tool for it.
+// `Error(string)`. So it's a special tool for it.
 func UnpackRevert(data []byte) (string, error) {
 	if len(data) < 4 {
 		return "", errors.New("invalid data for unpacking")
 	}
-	switch {
+	if !bytes.Equal(data[:4], revertSelector) {
-	case bytes.Equal(data[:4], revertSelector):
+		return "", errors.New("invalid data for unpacking")
+	}
 	typ, err := NewType("string", "", nil)
 	if err != nil {
 		return "", err
@@ -287,25 +266,4 @@ func UnpackRevert(data []byte) (string, error) {
 		return "", err
 	}
 	return unpacked[0].(string), nil
-	case bytes.Equal(data[:4], panicSelector):
-		typ, err := NewType("uint256", "", nil)
-		if err != nil {
-			return "", err
-		}
-		unpacked, err := (Arguments{{Type: typ}}).Unpack(data[4:])
-		if err != nil {
-			return "", err
-		}
-		pCode := unpacked[0].(*big.Int)
-		// uint64 safety check for future
-		// but the code is not bigger than MAX(uint64) now
-		if pCode.IsUint64() {
-			if reason, ok := panicReasons[pCode.Uint64()]; ok {
-				return reason, nil
-			}
-		}
-		return fmt.Sprintf("unknown panic code: %#x", pCode), nil
-	default:
-		return "", errors.New("invalid data for unpacking")
-	}
 }

accounts/abi/abi_test.go

@@ -1173,8 +1173,6 @@ func TestUnpackRevert(t *testing.T) {
 		{"", "", errors.New("invalid data for unpacking")},
 		{"08c379a1", "", errors.New("invalid data for unpacking")},
 		{"08c379a00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000d72657665727420726561736f6e00000000000000000000000000000000000000", "revert reason", nil},
-		{"4e487b710000000000000000000000000000000000000000000000000000000000000000", "generic panic", nil},
-		{"4e487b7100000000000000000000000000000000000000000000000000000000000000ff", "unknown panic code: 0xff", nil},
 	}
 	for index, c := range cases {
 		t.Run(fmt.Sprintf("case %d", index), func(t *testing.T) {