Isn't there support for smart contracts with assembly code?

[caiosabarros]

I run the following to fetch for txs for a contract on mainnet:

$ tx-coverage 0x2A8e1E676Ec238d8A992307B495b45B3fEAa5e86 --dune-api-key API_KEY --rpc-url RPC_URL

and got on my shell:

[⠊] Compiling...
[⠢] Compiling 1 files with 0.5.11
[⠆] Solc 0.5.11 finished in 75.27ms
Compiler run successful!
Error:
inline assembly block with no AST attribute

Is support for assembly codes a feasible feature? Or is it a bug with this specific contract? Currently almost all contracts have assembly code as the majority of them inherit from OZ contracts, so it'd be cool if that could be added.

Thanks for the tool, it is impressive!

[Raz0r]

It seems that older versions of solc do not provide AST for inline assembly, on newer versions (presumably >0.6.0) it works:

tx-coverage 0xa88800cd213da5ae406ce248380802bd53b47647
[⠊] Compiling...
[⠰] Compiling 24 files with 0.8.17
[⠔] Solc 0.8.17 finished in 303.52ms
Compiler run successful!
Fetching transaction hashes for address: 0xa88800cd213da5ae406ce248380802bd53b47647
Found 100 transaction hashes
⠤ [00:12:18] [####################################################################] 100/100 tx (0.0s)Wrote LCOV report.
| File                              | % Lines         | % Statements    | % Branches     | % Funcs        |
|-----------------------------------|-----------------|-----------------|----------------|----------------|
| src/FeeBank.sol                   | 0.00% (0/22)    | 0.00% (0/32)    | 100.00% (0/0)  | 0.00% (0/10)   |
| src/FeeBankCharger.sol            | 9.09% (1/11)    | 8.33% (1/12)    | 0.00% (0/4)    | 25.00% (1/4)   |
| src/Settlement.sol                | 88.46% (23/26)  | 86.11% (31/36)  | 62.50% (5/8)   | 100.00% (3/3)  |
| src/libraries/Address.sol         | 25.00% (1/4)    | 20.00% (2/10)   | 100.00% (0/0)  | 25.00% (1/4)   |
| src/libraries/DynamicSuffix.sol   | 100.00% (5/5)   | 100.00% (5/5)   | 100.00% (0/0)  | 100.00% (1/1)  |
| src/libraries/OrderSaltParser.sol | 80.00% (4/5)    | 80.00% (8/10)   | 100.00% (0/0)  | 80.00% (4/5)   |
| src/libraries/OrderSuffix.sol     | 78.26% (18/23)  | 68.18% (15/22)  | 55.56% (5/9)   | 100.00% (3/3)  |
| src/libraries/TakingFee.sol       | 16.67% (1/6)    | 16.67% (2/12)   | 0.00% (0/2)    | 25.00% (1/4)   |
| Total                             | 51.96% (53/102) | 46.04% (64/139) | 43.48% (10/23) | 41.18% (14/34) |

[caiosabarros]

Oh, awesome! Didn't know that AST was not provided for earlier versions of solc. Will use it on the right versions.
Thank you very much! 👍