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* bugc: compile `!` as a logical not * bugc: link the changelog entry to #353 * bugc: end each source range at its last token * bugc: link the changelog entry to #362 * bugc: add block.prevrandao * bugc: link the changelog entries to #363 * bugc: hash several value-type words with keccak256 * bugc: link the changelog entries to #365 * bugc: slice a fixed-size bytes value by its bytes * bugc: link the changelog entry to #357 * bugc: hash the data of dynamic bytes and strings * bugc: link the changelog entry to #360 * bugc: give a caller's call JUMP the invoke's arguments * bugc: list variables before a function's first statement * bugc: store a memory string's bytes when assigning it to storage A storage write took its value as a word, so a memory string or bytes reference wrote its memory address into the slot. Code generation now encodes the referenced bytes as Solidity does: inline with length * 2 up to 31 bytes, else length * 2 + 1 in the slot and the data from keccak256(slot), with the last word's trailing bytes cleared. A slice now carries the bytes type, so its value is recognized too. * bugc: link the changelog entry to #355 * bugc: say why the bytes test slices without naming the copy width * bugc: copy all of a slice's bytes irgen built a slice's data as a read and a write, and a read or write moves at most one word, so only the first 32 bytes were copied. Add a copy IR instruction (CALLDATACOPY from calldata, MCOPY from memory) and emit it for the slice's data. * bugc: link the changelog entries to #359 * bugc: copy a struct read from storage into memory * bugc: link the changelog entries to #361 * bugc: lay storage arrays out as Solidity does * bugc: add push to dynamic arrays in storage
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BUG exposes
block.numberandblock.timestampas special expressions, each anenvinstruction that compiles to one opcode. This addsblock.prevrandaothe same way: auint256that compiles toPREVRANDAO(0x44, EIP-4399), the usual source of block randomness since the merge.It touches each place the other block fields are listed: the parser (
prevrandaoafterblock.), the AST kindexpression:special:block.prevrandao, the type checker, irgen and the IR'sblock_prevrandaoenv op, the IR validator, evmgen, and the CFG view in@ethdebug/bugc-react.The behavioral test checks that the runtime code has
PREVRANDAOat each optimization level and that the call reads it (@ethdebug/evmruns each call in a block whose prevrandao is 0).