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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/destroy_and_transfer.wat
+2 -6
View File
@@ -3,6 +3,7 @@
(import "env" "ext_get_storage" (func $ext_get_storage (param i32 i32 i32) (result i32)))
(import "env" "ext_set_storage" (func $ext_set_storage (param i32 i32 i32)))
(import "env" "ext_call" (func $ext_call (param i32 i32 i64 i32 i32 i32 i32 i32 i32) (result i32)))
(import "env" "ext_transfer" (func $ext_transfer (param i32 i32 i32 i32) (result i32)))
(import "env" "ext_instantiate" (func $ext_instantiate (param i32 i32 i64 i32 i32 i32 i32 i32 i32 i32 i32) (result i32)))
(import "env" "memory" (memory 1 1))
@@ -139,16 +140,11 @@
;; does not keep the contract alive.
(call $assert
(i32.eq
(call $ext_call
(call $ext_transfer
(i32.const 80) ;; Pointer to destination address
(i32.const 8) ;; Length of destination address
(i64.const 0) ;; How much gas to devote for the execution. 0 = all.
(i32.const 0) ;; Pointer to the buffer with value to transfer
(i32.const 8) ;; Length of the buffer with value to transfer
(i32.const 0) ;; Pointer to input data buffer address
(i32.const 1) ;; Length of input data buffer
(i32.const 4294967295) ;; u32 max sentinel value: do not copy output
(i32.const 0) ;; Length is ignored in this case
)
(i32.const 0)
)