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chore(vcr-mem): re-validate scry consumed surface against scry-sai-core 2.3.0 (#383, #242) #523

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Merged
avrabe merged 1 commit into from
Jun 27, 2026
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chore(vcr-mem): re-validate scry consumed surface against scry-sai-core 2.3.0 (#383, #242) #523

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38 changes: 18 additions & 20 deletions Cargo.lock
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4 changes: 3 additions & 1 deletion crates/synth-cli/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -72,5 +72,7 @@ gimli = { version = "0.33", default-features = false, features = ["read", "std"]
# Tracks scry 2.x (SCPV v3): the major bump reshaped the provenance wire format,
# but synth's consumed surface (call_graph / function_summaries / stack_usage /
# reachable_from_exports / operand_stack) is unchanged and additive-only, so the
# bump is transparent here. See scry#63 / scry v2.0.0.
# bump is transparent here. See scry#63 / scry v2.0.0. Empirically re-verified
# against scry v2.3.0 (2026-06-27, lockfile bumped) — scry_shadow_stack_budget
# stays GREEN, so the "transparent" claim is tested, not just asserted.
scry-sai-core = "2.0"
11 changes: 8 additions & 3 deletions crates/synth-cli/tests/scry_shadow_stack_budget.rs
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@@ -1,9 +1,14 @@
//! VCR-MEM-001 (#383) layer-2 substrate — scry shadow-stack-depth proof, in-tree.
//!
//! Proves, in CI against the REAL gust-family module, that synth can obtain a
//! SOUND worst-case shadow-stack budget from scry (`scry-sai-core` v1.12, the
//! crates.io library finalized in scry#51 / scry PR #53). This is the layer-2
//! "proof the budget is sufficient" half of #383 — the half scry owns:
//! SOUND worst-case shadow-stack budget from scry (`scry-sai-core`, the crates.io
//! library finalized in scry#51 / scry PR #53). First validated on v1.12, then
//! across the SCPV v3 major bump (v2.x); re-verified GREEN on **scry v2.3.0**
//! (2026-06-27) — the consumed surface (`stack_usage.max_stack_bytes`,
//! `function_summaries[].recursive`, `reachable_from_exports`) is unchanged, so
//! the "2.x bump is transparent" claim in `Cargo.toml` is empirically backed, not
//! just asserted. This is the layer-2 "proof the budget is sufficient" half of
//! #383 — the half scry owns:
//!
//! - layer-1 (synth-side): the ELF `.bss` retarget mechanics that consume the
//! budget — still silicon-gated on gale's `--stack-first` answer.
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