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diff --git a/Changelog.md b/Changelog.md new file mode 100644 index 00000000..8805498e --- /dev/null +++ b/Changelog.md @@ -0,0 +1,187 @@ +Features: + + * Fixed point types (in progress) + +Bugfixes: + +### 0.3.6 (2016-08-10) + +Features: + + * Formal verification: Take external effects on a contract into account. + * Type Checker: Warning about unused return value of low-level calls and send. + * Output: Source location and node id as part of AST output + * Output: Source location mappings for bytecode + * Output: Formal verification as part of json compiler output. + +Bugfixes: + + * Commandline Interface: Do not crash if input is taken from stdin. + * Scanner: Correctly support unicode escape codes in strings. + * JSON output: Fix error about relative / absolute source file names. + * JSON output: Fix error about invalid utf8 strings. + * Code Generator: Dynamic allocation of empty array caused infinite loop. + * Code Generator: Correctly calculate gas requirements for memcpy precompile. + * Optimizer: Clear known state if two code paths are joined. + +### 0.3.5 (2016-06-10) + +Features: + + * Context-dependent path remappings (different modules can use the same library in different versions) + +Bugfixes: + + * Type Checking: Dynamic return types were removed when fetching data from external calls, now they are replaced by an "unusable" type. + * Type Checking: Overrides by constructors were considered making a function non-abstract. + +### 0.3.4 (2016-05-31) + +No change outside documentation. + +### 0.3.3 (2016-05-27) + + * Allow internal library functions to be called (by "inlining") + * Fractional/rational constants (only usable with fixed point types, which are still in progress) + * Inline assembly has access to internal functions (as jump labels) + * Running `solc` without arguments on a terminal will print help. + * Bugfix: Remove some non-determinism in code generation. + * Bugfix: Corrected usage of not / bnot / iszero in inline assembly + * Bugfix: Correctly clean bytesNN types before comparison + +### 0.3.2 (2016-04-18) + + * Bugfix: Inline assembly parser: `byte` opcode was unusable + * Bugfix: Error reporting: tokens for variably-sized types were not converted to string properly + * Bugfix: Dynamic arrays of structs were not deleted correctly. + * Bugfix: Static arrays in constructor parameter list were not decoded correctly. + +### 0.3.1 (2016-03-31) + + * Inline assembly + * Bugfix: Code generation: array access with narrow types did not clean higher order bits + * Bugfix: Error reporting: error reporting with unknown source location caused a crash + +### 0.3.0 (2016-03-11) + +BREAKING CHANGES: + + * Added new keywords `assembly`, `foreign`, `fixed`, `ufixed`, `fixedNxM`, `ufixedNxM` (for various values of M and N), `timestamp` + * Number constant division does not round to integer, but to a fixed point type (e.g. `1 / 2 != 1`, but `1 / 2 == 0.5`). + * Library calls now default to use DELEGATECALL (e.g. called library functions see the same value as the calling function for `msg.value` and `msg.sender`). + * `<address>.delegatecall` as a low-level calling interface + +Bugfixes: + * Fixed a bug in the optimizer that resulted in comparisons being wrong. + + +### 0.2.2 (2016-02-17) + + * Index access for types `bytes1`, ..., `bytes32` (only read access for now). + * Bugfix: Type checker crash for wrong number of base constructor parameters. + +### 0.2.1 (2016-01-30) + + * Inline arrays, i.e. `var y = [1,x,f()];` if there is a common type for `1`, `x` and `f()`. Note that the result is always a fixed-length memory array and conversion to dynamic-length memory arrays is not yet possible. + * Import similar to ECMAScript6 import (`import "abc.sol" as d` and `import {x, y} from "abc.sol"`). + * Commandline compiler solc automatically resolves missing imports and allows for "include directories". + * Conditional: `x ? y : z` + * Bugfix: Fixed several bugs where the optimizer generated invalid code. + * Bugfix: Enums and structs were not accessible to other contracts. + * Bugfix: Fixed segfault connected to function paramater types, appeared during gas estimation. + * Bugfix: Type checker crash for wrong number of base constructor parameters. + * Bugfix: Allow function overloads with different array types. + * Bugfix: Allow assignments of type `(x) = 7`. + * Bugfix: Type `uint176` was not available. + * Bugfix: Fixed crash during type checking concerning constructor calls. + * Bugfix: Fixed crash during code generation concerning invalid accessors for struct types. + * Bugfix: Fixed crash during code generating concerning computing a hash of a struct type. + +### 0.2.0 (2015-12-02) + + * **Breaking Change**: `new ContractName.value(10)()` has to be written as `(new ContractName).value(10)()` + * Added `selfdestruct` as an alias for `suicide`. + * Allocation of memory arrays using `new`. + * Binding library functions to types via `using x for y` + * `addmod` and `mulmod` (modular addition and modular multiplication with arbitrary intermediate precision) + * Bugfix: Constructor arguments of fixed array type were not read correctly. + * Bugfix: Memory allocation of structs containing arrays or strings. + * Bugfix: Data location for explicit memory parameters in libraries was set to storage. + +### 0.1.7 (2015-11-17) + + * Improved error messages for unexpected tokens. + * Proof-of-concept transcompilation to why3 for formal verification of contracts. + * Bugfix: Arrays (also strings) as indexed parameters of events. + * Bugfix: Writing to elements of `bytes` or `string` overwrite others. + * Bugfix: "Successor block not found" on Windows. + * Bugfix: Using string literals in tuples. + * Bugfix: Cope with invalid commit hash in version for libraries. + * Bugfix: Some test framework fixes on windows. + +### 0.1.6 (2015-10-16) + + * `.push()` for dynamic storage arrays. + * Tuple expressions (`(1,2,3)` or `return (1,2,3);`) + * Declaration and assignment of multiple variables (`var (x,y,) = (1,2,3,4,5);` or `var (x,y) = f();`) + * Destructuring assignment (`(x,y,) = (1,2,3)`) + * Bugfix: Internal error about usage of library function with invalid types. + * Bugfix: Correctly parse `Library.structType a` at statement level. + * Bugfix: Correctly report source locations of parenthesized expressions (as part of "tuple" story). + +### 0.1.5 (2015-10-07) + + * Breaking change in storage encoding: Encode short byte arrays and strings together with their length in storage. + * Report warnings + * Allow storage reference types for public library functions. + * Access to types declared in other contracts and libraries via `.`. + * Version stamp at beginning of runtime bytecode of libraries. + * Bugfix: Problem with initialized string state variables and dynamic data in constructor. + * Bugfix: Resolve dependencies concerning `new` automatically. + * Bugfix: Allow four indexed arguments for anonymous events. + * Bugfix: Detect too large integer constants in functions that accept arbitrary parameters. + +### 0.1.4 (2015-09-30) + + * Bugfix: Returning fixed-size arrays. + * Bugfix: combined-json output of solc. + * Bugfix: Accessing fixed-size array return values. + * Bugfix: Disallow assignment from literal strings to storage pointers. + * Refactoring: Move type checking into its own module. + +### 0.1.3 (2015-09-25) + + * `throw` statement. + * Libraries that contain functions which are called via CALLCODE. + * Linker stage for compiler to insert other contract's addresses (used for libraries). + * Compiler option to output runtime part of contracts. + * Compile-time out of bounds check for access to fixed-size arrays by integer constants. + * Version string includes libevmasm/libethereum's version (contains the optimizer). + * Bugfix: Accessors for constant public state variables. + * Bugfix: Propagate exceptions in clone contracts. + * Bugfix: Empty single-line comments are now treated properly. + * Bugfix: Properly check the number of indexed arguments for events. + * Bugfix: Strings in struct constructors. + +### 0.1.2 (2015-08-20) + + * Improved commandline interface. + * Explicit conversion between `bytes` and `string`. + * Bugfix: Value transfer used in clone contracts. + * Bugfix: Problem with strings as mapping keys. + * Bugfix: Prevent usage of some operators. + +### 0.1.1 (2015-08-04) + + * Strings can be used as mapping keys. + * Clone contracts. + * Mapping members are skipped for structs in memory. + * Use only a single stack slot for storage references. + * Improved error message for wrong argument count. (#2456) + * Bugfix: Fix comparison between `bytesXX` types. (#2087) + * Bugfix: Do not allow floats for integer literals. (#2078) + * Bugfix: Some problem with many local variables. (#2478) + * Bugfix: Correctly initialise `string` and `bytes` state variables. + * Bugfix: Correctly compute gas requirements for callcode. + +### 0.1.0 (2015-07-10) |