Compiler ICEs in CI? #36125

Looks like there are a bunch of GCC 12 ICEs in the Warp CI:

• Task previous releases: https://github.com/bitcoin/bitcoin/actions/runs/32101345101/job/95602400388 LLM reason (✨ experimental): CI failed due to a GCC 12 internal compiler error (segmentation fault) while compiling src/rpc/blockchain.cpp.

• Task previous releases: https://github.com/bitcoin/bitcoin/actions/runs/33372693809/job/99427161856 LLM reason (✨ experimental): CI failed due to a GCC 12 internal compiler error (segmentation fault) while compiling txmempool/tinyformat.h during the build.

Not sure why they would pop up now, when they never happened before?

cc @willcl-ark Maybe someone can ask warpbuild if the two builds ran on the same hardware/VM. If yes, maybe that hardware should be checked for defects?

Done 👍🏼

Thx.

On the other hand, both happening for the exact same CI config (and on no other config), seems to indicate that maybe something may be wrong in that config (or any of it's dependencies)?

An OOM seems unlikely, given the 20GiB of free RAM.

Maybe this will fix itself, when minimum GCC is switched to 13.

Ok, nvm. Clang 17 also ICEs:

• Task No wallet: https://github.com/bitcoin/bitcoin/actions/runs/33087954636/job/99830997698 LLM reason (✨ experimental): CI failed due to a Clang 17 compiler segmentation fault (exit code 139) while compiling capnp/mining.capnp.proxy-server.c++.

Warp confirmed the two first jobs were on different hardware too.

Not sure what the issue is, but this is getting out of hand:

• Task Alpine (musl): https://github.com/bitcoin/bitcoin/actions/runs/33526907826/job/99919961765 LLM reason (✨ experimental): CI failed due to a compiler crash (internal compiler error: Segmentation fault) while building the fuzz target (cmpctblock.cpp).