cargo-c corrupt dll.lib repro

Reproduction steps:

Install the ffi library with cargo capi:

cd example-ffi
cargo capi install --prefix build

The build subdir of example-ffi should now contain:

• bin/ with example-ffi.dll and exmaple-ffi.pdb
• include/ with example-ffi.h
• lib/ with example-ffi.def, example-ffi.dll.lib and example.ffi.lib (as well as a pkgconfig subdir)

Try to build the C application:

1. Update example-c/CMakeLists.txt to set the find_library directory path to the location you cloned this repo. e.g.

find_library(EXAMPLE_FFI_LIB example-ffi
    PATHS "C:/Users/danie/Code/Rust/example-ffi/example-ffi/build/lib"
    REQUIRED
)

2. Run the build:

cd example-c
cmake -S . -B build
cmake --build build

3. Observe the error output:

PS C:\Users\danie\Code\Rust\example-ffi\example-c> cmake -S . -B build
-- Building for: Visual Studio 17 2022
-- Selecting Windows SDK version 10.0.22621.0 to target Windows 10.0.22631.
-- The C compiler identification is MSVC 19.41.34123.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.41.34120/bin/Hostx64/x64/cl.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Found example-ffi library: C:/Users/danie/Code/Rust/example-ffi/example-ffi/build/lib/example-ffi.dll.lib
-- Configuring done (2.0s)
-- Generating done (0.0s)
-- Build files have been written to: C:/Users/danie/Code/Rust/example-ffi/example-c/build
PS C:\Users\danie\Code\Rust\example-ffi\example-c> cmake --build build
MSBuild version 17.11.9+a69bbaaf5 for .NET Framework

  1>Checking Build System
  Building Custom Rule C:/Users/danie/Code/Rust/example-ffi/example-c/CMakeLists.txt
  main.c
C:\Users\danie\Code\Rust\example-ffi\example-ffi\build\lib\example-ffi.dll.lib : fatal error LNK1127: library is corrupt [C:\Us
ers\danie\Code\Rust\example-ffi\example-c\build\example-c.vcxproj]

4. Optionally, confirm with dumpbin:

cd example-c\build\lib
dumpbin /exports example-ffi.dll.lib

Produces:

Microsoft (R) COFF/PE Dumper Version 14.41.34123.0
Copyright (C) Microsoft Corporation.  All rights reserved.


Dump of file example-ffi.dll.lib

File Type: LIBRARY
example-ffi.dll.lib : fatal error LNK1107: invalid or corrupt file: cannot read at 0x42A

The same command works if provided the static example-ffi.lib instead of example-ffi.dll.lib as an argument.