Windows x64 no-std build broken with errors related to compiler-builtins

[byeongkeunahn]

Hello, the nightly update on 2023-12-02 seems to break the continuous integration (CI) on the basm-rs project on Windows x64 builds (nightly-x86_64-pc-windows-msvc). The Linux x86/x64 builds and the wasm32 builds continue to run fine. The recent commits on the repo is Linux-only and not related to Windows; thus the Windows build should not be affected. It seems like the recently merged pull request 113923 may be relevant.

I expected to see this happen: the basm-rs CI build should continue to pass.

Instead, this happened: the basm-rs CI build fails with a linker error related to compiler-builtins.

Meta

I tried to localize the error with cargo-bisect-rustc on Windows 11 x64 with the msvc toolchain as follows:

git clone https://github.com/byeongkeunahn/basm-rs.git
cargo-bisect-rustc -vv --start=2023-12-01 --end=2023-12-03

which results in the following analysis report:

searched nightlies: from nightly-2023-12-01 to nightly-2023-12-03
regressed nightly: nightly-2023-12-02
searched commit range: 87e1447...8c2b577
regressed commit: 8c2b577

bisected with cargo-bisect-rustc v0.6.7

Host triple: x86_64-pc-windows-msvc
Reproduce with:

cargo bisect-rustc --start=2023-12-01 --end=2023-12-03

The actual error message is about unresolved external symbols.

  = note: symbols.o : error LNK2001: unresolved external symbol _ZN17compiler_builtins3mem4bcmp17hdd43ed361972df2aE
          symbols.o : error LNK2001: unresolved external symbol _ZN17compiler_builtins3mem6memcmp17h4000bdfb54398fd7E
          symbols.o : error LNK2001: unresolved external symbol _ZN17compiler_builtins3mem6memcpy17h76ab47a482abb17aE
          symbols.o : error LNK2001: unresolved external symbol _ZN17compiler_builtins3mem6memset17hddee021ef3511addE
          symbols.o : error LNK2001: unresolved external symbol _ZN17compiler_builtins3mem6strlen17h8221a76238dd80f9E
          symbols.o : error LNK2001: unresolved external symbol _ZN17compiler_builtins3mem7memmove17h9a354b96e96d4c1eE
          ..(omitted)\target-bisector-ci-8c2b57721728233e074db69d93517614de338055-x86_64-pc-windows-msvc\x86_64-pc-windows-msvc\debug\deps\basm.exe : fatal error LNK1120: 6 unresolved externals

Thanks in advance!

[dianqk]

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