1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
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)
|
