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-rw-r--r--packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol13
-rw-r--r--packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol7
2 files changed, 17 insertions, 3 deletions
diff --git a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol
index 8b7333646..e661f2427 100644
--- a/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol
+++ b/packages/contracts/src/2.0.0/protocol/AssetProxyOwner/AssetProxyOwner.sol
@@ -105,11 +105,20 @@ contract AssetProxyOwner is
uint256 index
)
internal
+ pure
returns (bytes4 result)
{
- require(b.length >= index + 4);
+ require(
+ b.length >= index + 4,
+ "GREATER_OR_EQUAL_TO_4_LENGTH_REQUIRED"
+ );
+
+ // Arrays are prefixed by a 32 byte length field
+ index += 32;
+
+ // Read the bytes4 from array memory
assembly {
- result := mload(add(b, 32))
+ result := mload(add(b, index))
// Solidity does not require us to clean the trailing bytes.
// We do it anyway
result := and(result, 0xFFFFFFFF00000000000000000000000000000000000000000000000000000000)
diff --git a/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol b/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol
index 504e950a8..93873cbcc 100644
--- a/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol
+++ b/packages/contracts/src/2.0.0/utils/LibBytes/LibBytes.sol
@@ -467,8 +467,13 @@ library LibBytes {
b.length >= index + 4,
"GREATER_OR_EQUAL_TO_4_LENGTH_REQUIRED"
);
+
+ // Arrays are prefixed by a 32 byte length field
+ index += 32;
+
+ // Read the bytes4 from array memory
assembly {
- result := mload(add(b, 32))
+ result := mload(add(b, index))
// Solidity does not require us to clean the trailing bytes.
// We do it anyway
result := and(result, 0xFFFFFFFF00000000000000000000000000000000000000000000000000000000)