v0.3.8

What's Changed

Non-breaking changes and improvements:

• transient storage keyword (#3373)
• ternary operators (#3398)
• raw_revert() builtin (#3136)
• shift operators (#3019)
• make send() gas stipend configurable (#3158)
• use new push0 opcode (#3361)
• python 3.11 support (#3129)
• drop support for python 3.8 and 3.9 (#3325)
• build for aarch64 (#2687)

Major refactoring PRs:

• refactor front-end type system (#2974)
• merge front-end and codegen type systems (#3182)
• simplify GlobalContext (#3209)
• remove FunctionSignature (#3390)

Notable fixes:

• assignment when rhs is complex type and references lhs (#3410)
• uninitialized immutable values (#3409)
• success value when mixing max_outsize=0 and revert_on_failure=False (GHSA-w9g2-3w7p-72g9)
• block certain kinds of storage allocator overflows (GHSA-mgv8-gggw-mrg6)
• store-before-load when a dynarray appears on both sides of an assignment (GHSA-3p37-3636-q8wv)
• bounds check for loops of the form for i in range(x, x+N) (GHSA-6r8q-pfpv-7cgj)
• alignment of call-site posargs and kwargs for internal functions (GHSA-ph9x-4vc9-m39g)
• batch nonpayable check for default functions calldatasize < 4 in (#3104, #3408, cf. GHSA-vxmm-cwh2-q762)

Other docs updates, chores and fixes:

• call graph stability (#3370)
• fix vyper-serve output (#3338)
• add custom: natspec tags (#3403)
• add missing pc maps to vyper_json output (#3333)
• fix constructor context for internal functions (#3388)
• add deprecation warning for selfdestruct usage (#3372)
• add bytecode metadata option to vyper-json (#3117)
• fix compiler panic when a break is outside of a loop (#3177)
• fix complex arguments to builtin functions (#3167)
• add support for all types in ABI imports (#3154)
• disable uadd operator (#3174)
• block bitwise ops on decimals (#3219)
• raise UNREACHABLE (#3194)
• allow enum as mapping key (#3256)
• block boolean not operator on numeric types (#3231)
• enforce that loop's iterators are valid names (#3242)
• fix typechecker hotspot (#3318)
• rewrite typechecker journal to handle nested commits (#3375)
• fix missing pc map for empty functions (#3202)
• guard against iterating over empty list in for loop (#3197)
• skip enum members during constant folding (#3235)
• bitwise not constant folding (#3222)
• allow accessing members of constant address (#3261)
• guard against decorators in interface (#3266)
• fix bounds for decimals in some builtins (#3283)
• length of literal empty bytestrings (#3276)
• block empty() for HashMaps (#3303)
• fix type inference for empty lists (#3377)
• disallow logging from pure, view functions (#3424)
• improve optimizer rules for comparison operators (#3412)
• deploy to ghcr on push (#3435)
• add note on return value bounds in interfaces (#3205)
• index id param in URI event of ERC1155ownable (#3203)
• add missing asset function to ERC4626 built-in interface (#3295)
• clarify skip_contract_check=True can result in undefined behavior (#3386)
• add custom NatSpec tag to docs (#3404)
• fix uint256_addmod doc (#3300)
• document optional kwargs for external calls (#3122)
• remove slice() length documentation caveats (#3152)
• fix docs of blockhash to reflect revert behaviour (#3168)
• improvements to compiler error messages by (#3121, #3134, #3312, #3304, #3240, #3264, #3343, #3307, #3313 and #3215)

These are really just the highlights, as many other bugfixes, docs updates and refactoring (over 150 commits!) made it into this release! Special thanks to contributions from @tserg, @trocher, @z80dev, @emc415 and @benber86

New Contributors

• @omahs made their first contribution in #3128
• @ObiajuluM made their first contribution in #3124
• @trocher made their first contribution in #3134
• @ozmium22 made their first contribution in #3149
• @ToonVanHove made their first contribution in #3168
• @emc415 made their first contribution in #3158
• @lgtm-com made their first contribution in #3147
• @tdurieux made their first contribution in #3224
• @victor-ego made their first contribution in #3263
• @miohtama made their first contribution in #3257
• @kelvinfan001 made their first contribution in #2687

Full Changelog: v0.3.7...v0.3.8