mirror of
https://github.com/github/codeql.git
synced 2026-05-27 01:21:23 +02:00
dd2deacd00
Add a 4th disjunct to `SsaImplInput::variableWrite` in the shared-SSA adapter that mirrors legacy ESSA's `ImportStarRefinement`: every variable whose scope is the import-star's scope, OR which is used in the import-star's scope, gets an uncertain write at the `import *` position. Uncertain writes do not kill prior definitions; shared SSA's `SsaUncertainWrite` joins the new value with the immediately-preceding definition via `uncertainWriteDefinitionInput`. This is the equivalent of legacy ESSA's two-input refinement. Cannot depend on `ImportStar` / `ImportResolution` (those modules import `SsaImpl`), so the predicate uses the structural heuristic on `Cfg::ImportStarNode` directly. This closes the two remaining failing dataflow library-tests: - `import-star/global` — `module_export` chains via `from X import *` re-exports now resolve: the importing module has an SSA def of every re-exported name, so `lastUseVar` finds the read at the use site. - `typetracking_imports/highlight_problem` — a direct `from .foo import foo` immediately followed by `from .other import *` is now correctly marked as dead at the direct import. Two scope-entry-def noise rows in `highlight_problem.expected` are also dropped — legacy ESSA needed them as refinement inputs, but shared SSA handles uncertain writes without an explicit prior def. They were always tagged `no use to normal exit` (dead). Dataflow library-tests: 62/64 → 64/64 passing. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>