Using a plugin that was built without `-C prefer-dynamic` causes LLVM error

[pczarn]

I forgot to add plugin = true to Cargo.toml and got this when building an external test:

: CommandLine Error: Option 'interpreter-print-volatile' registered more than once!
LLVM ERROR: inconsistency in registered CommandLine options

For reference, this is an incorrect way to build a plugin:
rustc src/lib.rs --crate-type dylib -g
This is added by plugin = true:
rustc src/lib.rs --crate-type dylib -C prefer-dynamic -g --test -C metadata=7ede684f643fceb6 -C extra-filename=-7ede684f643fceb6

[steveklabnik]

Is there any way we can get a full reproduction here? Does this work with any plugin code at all?

[Yamakaky]

I have a similar problem with bindgen_plugin.

[Mark-Simulacrum]

Could someone provide a quick summary of how to reproduce this? Otherwise I think we should close.

[steveklabnik]

With no reproduction instructions in almost two years, I'm going to close this. Thanks!