inline-asm on nightly

[little-arhat]

Hello,

With new asm! macro merged, it's impossible to use cotrex-m crate with inline-asm on nightly, because latest released version (0.6.2) still uses old asm!.
At the same time it's impossible to use cortex-m from git, because it then conflicts with cortex-m brough by other deps (rtfm, cortex-m-log, etc):

error: failed to select a version for `cortex-m`.
    ... required by package `cortex-m-log v0.6.1`
    ... which is depended on by `fcfs-rtfm v0.1.0 (/Users/r/prj/p/copterust/fcfs-rtfm)`
versions that meet the requirements `= 0.6.2` are: 0.6.2

the package `cortex-m` links to the native library `cortex-m`, but it conflicts with a previous package which links to `cortex-m` as well:
package `cortex-m v0.6.2 (https://github.com/rust-embedded/cortex-m?rev=c9c7539233954822a6132f4bc13e5763371b5cb2#c9c75392)`
    ... which is depended on by `fcfs-rtfm v0.1.0 (/Users/r/prj/p/copterust/fcfs-rtfm)`

What's the recommended course of action, besides not using inline-asm? (refs #217).

[adamgreig]

Are you using the git version by changing your dependency line or by using the Cargo patch feature? I think using patch should fix this. Another option is to use an older nightly. We'll aim to release a new cortex-m release soon too, which is the best fix!

[diondokter]

Yes, patch works (at least with the alloc repo)

[dependencies]
cortex-m = { version = "0.6.2", features = ["inline-asm"] }

[patch.crates-io]
cortex-m = { git = "https://github.com/rust-embedded/cortex-m" }

[little-arhat]

I've been using git version, but I'll try patch.

Thank you @adamgreig , @diondokter !

[adamgreig]

@little-arhat did using patch work OK for you?

[little-arhat]

@adamgreig yes, thanks! is there ETA for a proper fix?

[adamgreig]

The next release will have a fix; see #217 for updates but hopefully soon.