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seal: Fix and improve error reporting (#6773)

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* seal: Rework ext_transfer, ext_instantiate, ext_call error handling

* Deny calling plain accounts (must use transfer now)
* Return proper module error rather than ad-hoc strings
* Return the correct error codes from call,instantiate (documentation was wrong)
* Make ext_transfer fallible again to make it consistent with ext_call

* seal: Improve error messages on memory access failures

* seal: Convert contract trapped to module error

* seal: Add additional tests for transfer, call, instantiate

These tests verify that those functions return the error types
which are declared in its docs.

* Make it more pronounced that to_execution_result handles trap_reason

* Improve ReturnCode docs

* Fix whitespace issues in wat files

* Improve ReturnCode doc

* Improve ErrorOrigin doc and variant naming

* Improve docs on ExecResult and ExecError

* Encode u32 sentinel value as hex

* with_nested_context no longer accepts an Option for trie

* Fix successful typo

* Rename InvalidContractCalled to NotCallable
This commit is contained in:
Alexander Theißen
2020-08-03 12:03:22 +02:00
committed by GitHub
parent 0553dabe32
commit 6671d017d6
16 changed files with 855 additions and 265 deletions
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substrate/frame/contracts/fixtures/caller_contract.wat
+2 -2
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@@ -89,7 +89,7 @@
(call $ext_instantiate
(i32.const 24) ;; Pointer to the code hash.
(i32.const 32) ;; Length of the code hash.
(i64.const 200) ;; How much gas to devote for the execution.
(i64.const 187500000) ;; Just enough to pay for the instantiate
(i32.const 0) ;; Pointer to the buffer with value to transfer
(i32.const 8) ;; Length of the buffer with value to transfer.
(i32.const 8) ;; Pointer to input data buffer address
@@ -206,7 +206,7 @@
(call $ext_call
(i32.const 16) ;; Pointer to "callee" address.
(i32.const 8) ;; Length of "callee" address.
(i64.const 100) ;; How much gas to devote for the execution.
(i64.const 117500000) ;; Just enough to make the call
(i32.const 0) ;; Pointer to the buffer with value to transfer
(i32.const 8) ;; Length of the buffer with value to transfer.
(i32.const 8) ;; Pointer to input data buffer address