[PROTOTYPE] Add analyzer-only ABSL_ANALYZER_ASSUME primitive and consume it in the nullability checker - #1718
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…ume it in the nullability checker Introduces a single, analyzer-only primitive `ABSL_ANALYZER_ASSUME(cond)` in Abseil that feeds a fact to Clang dataflow-based analyses and expands to nothing in production builds. The nullability checker recognizes it once and calls `Env.assume(...)`, so error-checking macros can teach analyses a fact (e.g. non-nullness after `CHECK_NE(p, nullptr)`) by emitting the shared primitive instead of each carrying its own analyzer workaround. Wires up Abseil `CHECK_OP`/`QCHECK_OP` to emit it under analysis (production expansion unchanged). Prototype for discussion. PiperOrigin-RevId: 961780215
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[PROTOTYPE] Add analyzer-only ABSL_ANALYZER_ASSUME primitive and consume it in the nullability checker
Introduces a single, analyzer-only primitive
ABSL_ANALYZER_ASSUME(cond)inAbseil that feeds a fact to Clang dataflow-based analyses and expands to nothing
in production builds. The nullability checker recognizes it once and calls
Env.assume(...), so error-checking macros can teach analyses a fact (e.g.non-nullness after
CHECK_NE(p, nullptr)) by emitting the shared primitiveinstead of each carrying its own analyzer workaround. Wires up Abseil
CHECK_OP/QCHECK_OPto emit it under analysis (production expansionunchanged). Prototype for discussion.