Add get_pgcstack_static to non-allocating allowlist#100
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On arm64 (Apple Silicon), Julia uses `jl_get_pgcstack_static` instead of `jl_get_pgcstack` to access the GC stack. This variant was missing from the `fn_may_allocate` allowlist, causing spurious "1 allocation" reports for every `@check_allocs`-decorated function on macOS/arm64. Ref: chalk-lab/Mooncake.jl#982
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Thanks for the fix-up @sunxd3 !
Sorry for the delay in reviewing, let's get this out to the masses
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Summary
jl_get_pgcstack_staticinstead ofjl_get_pgcstackto access the GC stackfn_may_allocateallowlist insrc/classify.jl, causing spurious "1 allocation" reports for every@check_allocs-decorated function on macOS/arm64"get_pgcstack_static"alongside the existing"get_pgcstack"entryContext
Discovered via Mooncake.jl#982 — all
check_allocs-based tests fail with false positives on Apple Silicon due to this missing entry. A downstream workaround was proposed in Mooncake.jl#1092 but fixing it here upstream is the right approach.MWE (on arm64/Apple Silicon)