- Support Dart 3.13 combined VM snapshots
- Add CID kinds and layouts for LocalVarDescriptors, ApiError, and UnwindError
- Fix stream desync causing "PP not resolved" in `r2flutter -p`
- Skip zero-length ObjectPools when resolving PP slots
The r2 6.1.6 release parses the bare '>' redirect inside the quoted
!!sh -c one-liner and truncates the command, so the test produced no
output on CI while passing against r2 git. Move the pipeline into a
helper script so the r2 command line carries no quotes or redirects.
Co-Authored-By: Claude Fable 5 <[email protected]>
The four kDart*Snapshot* symbols are external/global and load-bearing (the engine
resolves them at runtime), so they survive strip; but obfuscators/repackagers can
remove them, leaving only the two data snapshots findable by magic scan
(instruction images carry no magic) and iso_instr=0, which disables IT name
recovery.
Add locate_instr_images_structural(): vm_instr = start of the first executable
section; read the Dart Image header (word0=ImageSize) and chain
iso_instr = align_up(vm_instr + ImageSize, 64). Every step is cross-checked
(plausible headers; the isolate image must end where the first data image
begins), so an unknown/gapped layout degrades to 0 (no IT names) rather than junk
addresses. No-op when symbols already resolved the instructions.
Verified against symbol-derived ground truth: Runner (0x4000/0xe700, full 7671
IT entries recovered) and AuthPass (0x5a80/0xfdc0); the gapped macOS hello.aot
safely falls back to 0. Symbol-present bins unchanged; suite green (95 db/cmd,
3 extras, 35 custom).
Adds scripts/strip_macho_symbols.py (zeroes LC_SYMTAB + dyld export trie, since
strip cannot) and test/db/cmd/discovery-stripped-ios which builds the fixture
from the committed Runner App and asserts structural recovery. Remaining
follow-ups tracked in COMMIT2.md.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
- Consolidate all version metadata into offsets.json as the single source
of truth (hashes, version profiles, offset arrays)
- Remove CID fields (cid_class, cid_function, cid_code, cid_string, ...)
from DartVerLayout struct — all CID lookups now go through dart_cid.c's
cid_tables[] via dart_cid_get()
- Remove CID fast-path switch from dart_cid_get(); always use cid_tables[]
- Replace l->cid_* references in dart_pool_parse.c and dart_pool_names.c
with dart_cid_get(l, DART_CID_*) calls
- Remove CID fallback assignments from dart_pick_layout_by_hash()
- Delete obsolete scripts/derive_offsets.py and scripts/gen_offsets.sh
- Add `make gen` target to regenerate C files from offsets.json
- Update doc/learn.md, doc/support.md, INFO.md, and test expectations
FatalSec