Unresolved symbol linker error when running cargo test with an #[used] static variable on Windows

[GabeRealB]

Compiling the following code with cargo test on the x86_64-pc-windows-msvc toolchain results in linker errors.

This compiles, if I remove the #[used] attribute.

Code

#![crate_type = "lib"]

#[used]
static STATIC: usize = 0;

Version it worked on

It most recently worked on: rustc 1.81.0-nightly (fda509e 2024-06-25)

Version with regression

rustc --version --verbose:

rustc 1.81.0-nightly (4bc39f028 2024-06-26)
binary: rustc
commit-hash: 4bc39f028d14c24b04dd17dc425432c6ec354536
commit-date: 2024-06-26
host: x86_64-pc-windows-msvc
release: 1.81.0-nightly
LLVM version: 18.1.7

Error output

cargo +nightly-2024-06-27 test
   Compiling test_used v0.1.0 (C:\Users\borre\Projects\test_used)
error: linking with `link.exe` failed: exit code: 1120
  |
  = note: "C:\\Program Files\\Microsoft Visual Studio\\2022\\Preview\\VC\\Tools\\MSVC\\14.41.33923\\bin\\HostX64\\x64\\link.exe" "/NOLOGO" "C:\\Users\\borre\\AppData\\Local\\Temp\\rustcVv8M8T\\symbols.o" "C:\\Users\\borre\\Projects\\test_used\\target\\debug\\deps\\test_used-c1d5ca8573ace82e.3pi38yqbvlr9am6dbbz5352mf.rcgu.o" "C:\\Users\\borre\\Projects\\test_used\\target\\debug\\deps\\test_used-c1d5ca8573ace82e.7aqy2o8d4xuoqwac9i42m4wri.rcgu.o" "C:\\Users\\borre\\Projects\\test_used\\target\\debug\\deps\\test_used-c1d5ca8573ace82e.8gwc9cd16aio4dxx1kxr4jifi.rcgu.o" "C:\\Users\\borre\\Projects\\test_used\\target\\debug\\deps\\test_used-c1d5ca8573ace82e.bbox2czukkncahd1umkcqauig.rcgu.o" "C:\\Users\\borre\\Projects\\test_used\\target\\debug\\deps\\test_used-c1d5ca8573ace82e.dozidi37r8cqetuj81knplkdp.rcgu.o" "C:\\Users\\borre\\Projects\\test_used\\target\\debug\\deps\\test_used-c1d5ca8573ace82e.6fnjt5tgs4wtkwgvovigbtf6n.rcgu.o" "/LIBPATH:C:\\Users\\borre\\Projects\\test_used\\target\\debug\\deps" "/LIBPATH:C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libtest-a8bfdeafbeaa6d1a.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libgetopts-1070a0bb8d33b27b.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libunicode_width-c8ef73cb9681873c.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\librustc_std_workspace_std-cbefe9950d472de3.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libstd-cef76c2685dfb4ca.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libpanic_unwind-03fd356be7a76b95.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\librustc_demangle-9ca224f74f6cdb39.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libstd_detect-85233c80bb492019.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libhashbrown-30b8f0749c333bea.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\librustc_std_workspace_alloc-cd139eb78ab0a78e.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libunwind-d887285092c89c96.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libcfg_if-df97a862ba982737.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\liballoc-3ef5c3ee98d94810.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\librustc_std_workspace_core-cca5aeb939a92213.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libcore-0a7d9524c210bd3d.rlib" "C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib\\libcompiler_builtins-a6954cc40265b962.rlib" "kernel32.lib" "kernel32.lib" "advapi32.lib" "kernel32.lib" "ntdll.lib" "userenv.lib" "ws2_32.lib" "kernel32.lib" "ws2_32.lib" "kernel32.lib" "/defaultlib:msvcrt" "/NXCOMPAT" "/LIBPATH:C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib" "/OUT:C:\\Users\\borre\\Projects\\test_used\\target\\debug\\deps\\test_used-c1d5ca8573ace82e.exe" "/OPT:REF,NOICF" "/DEBUG" "/PDBALTPATH:%_PDB%" "/NATVIS:C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\etc\\intrinsic.natvis" "/NATVIS:C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\etc\\liballoc.natvis" "/NATVIS:C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\etc\\libcore.natvis" "/NATVIS:C:\\Users\\borre\\.rustup\\toolchains\\nightly-2024-06-27-x86_64-pc-windows-msvc\\lib\\rustlib\\etc\\libstd.natvis"
  = note: symbols.o : error LNK2001: unresolved external symbol _ZN9test_used6STATIC17h1ae0e71c81bcc7b1E
          C:\Users\borre\Projects\test_used\target\debug\deps\test_used-c1d5ca8573ace82e.exe : fatal error LNK1120: 1 unresolved externals

@rustbot modify labels: +regression-from-stable-to-nightly -regression-untriaged

[matthiaskrgr]

isn't this #127052 ?

[ehuss]

Thanks for the report! Yea, this appears to be a duplicate of #127052, so closing in favor of that. This should be fixed in the latest nightly (2024-06-29 I believe).