test: avoid undersized Boost.Test signal stacks #36045

pull l0rinc wants to merge 1 commits into bitcoin:master from l0rinc:l0rinc/test-kernel-sigaltstack changing 2 files +4 −0

l0rinc commented at 5:20 PM on August 20, 2026: contributor

Problem: Boost.Test can fail while an Alpine CI test binary is starting, before any tests run. The required signal stack size depends on the runner's CPU features, while musl provides a fixed size.

Fix: Use the regular process stack for Boost.Test signal handling in both unit-test binaries.

Fixes #36026

test: avoid undersized Boost.Test signal stacks

Boost.Test registers a `SIGSTKSZ` alternate signal stack as each test binary starts, before any tests run.
On musl, this can be smaller than Linux's hardware-dependent minimum, causing `sigaltstack()` to fail with `ENOMEM` during setup.

Disable Boost.Test's alternate stack in both test entry points.
Signal handlers continue to use the regular process stack. Boost.Test can no longer report stack overflows.

Fixes #36026

Co-authored-by: MarcoFalke <*~=`'#}+{/-|&$^_@721217.xyz>

9eba3aafa6

DrahtBot added the label Tests on Aug 20, 2026
DrahtBot commented at 5:20 PM on August 20, 2026: contributor



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For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/36045.



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ACK maflcko

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maflcko commented at 5:23 PM on August 20, 2026: member

lgtm ACK 9eba3aafa6c26994a301965ef8ddca0ada5f85c7

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#36026 more boost unit test framework bugs. Was: Corrupt hardware on warp CI runners?

test: avoid undersized Boost.Test signal stacks #36045

Code Coverage & Benchmarks

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