int object; test.c(1): Error: variable `test.object` conflicts with import `test.object` at test.c
The trouble is ImportC shouldn't be importing object.
@WalterBright created dlang/dmd pull request #13992 "fix Issue 23003 - ImportC should not import object.d" fixing this issue: - fix Issue 23003 - ImportC should not import object.d https://github.com/dlang/dmd/pull/13992
dlang/dmd pull request #13992 "fix Issue 23003 - ImportC should not import object.d" was merged into master: - 8fae586d1115f00fb9f8bfd5dd1782177fde9e51 by Walter Bright: fix Issue 23003 - ImportC should not import object.d https://github.com/dlang/dmd/pull/13992