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@ggwpez ggwpez commented Apr 9, 2024

Warn when a crate could unexpectedly pull in libstd.

Example on Polkadot-SDK:
Screenshot 2024-04-09 at 23 19 24

Since these crate do have both:
#![cfg_attr(not(feature = "std"), no_std)] and #![cfg(feature = "runtime-benchmarks")] which conditionally disables the nostd attribute.

Note that this is just a warning for now. Could be made into an additional lint (plus failure condition) in the future.

ggwpez added 3 commits April 9, 2024 23:21
Signed-off-by: Oliver Tale-Yazdi <[email protected]>
Signed-off-by: Oliver Tale-Yazdi <[email protected]>
Signed-off-by: Oliver Tale-Yazdi <[email protected]>
@ggwpez ggwpez enabled auto-merge (squash) April 9, 2024 21:28
@ggwpez ggwpez changed the title Warn on unexpected libstd pull Warn on unexpected libstd dependence Apr 9, 2024
Signed-off-by: Oliver Tale-Yazdi <[email protected]>
@ggwpez ggwpez disabled auto-merge April 9, 2024 22:30
@ggwpez ggwpez merged commit c72cce2 into master Apr 9, 2024
@ggwpez ggwpez deleted the dev branch April 9, 2024 22:30
github-merge-queue bot pushed a commit to paritytech/polkadot-sdk that referenced this pull request Apr 17, 2024
Preparation for #3935

Changes:
- Add some `default-features = false` for the case that a crate and that
dependency both support nostd builds.
- Shuffle files around of some benchmarking-only crates. These
conditionally disabled the `cfg_attr` for nostd and pulled in libstd.
Example [here](ggwpez/zepter#95). The actual
logic is moved into a `inner.rs` to preserve nostd capability of the
crate in case the benchmarking feature is disabled.
- Add some `use sp_std::vec` where needed.
- Remove some `optional = true` in cases where it was not optional.
- Removed one superfluous `cfg_attr(not(feature = "std"), no_std..`.

All in all this should be logical no-op.

---------

Signed-off-by: Oliver Tale-Yazdi <[email protected]>
github-merge-queue bot pushed a commit to paritytech/polkadot-sdk that referenced this pull request Apr 17, 2024
Preparation for #3935

Changes:
- Add some `default-features = false` for the case that a crate and that
dependency both support nostd builds.
- Shuffle files around of some benchmarking-only crates. These
conditionally disabled the `cfg_attr` for nostd and pulled in libstd.
Example [here](ggwpez/zepter#95). The actual
logic is moved into a `inner.rs` to preserve nostd capability of the
crate in case the benchmarking feature is disabled.
- Add some `use sp_std::vec` where needed.
- Remove some `optional = true` in cases where it was not optional.
- Removed one superfluous `cfg_attr(not(feature = "std"), no_std..`.

All in all this should be logical no-op.

---------

Signed-off-by: Oliver Tale-Yazdi <[email protected]>
sandreim pushed a commit to paritytech/polkadot-sdk that referenced this pull request Apr 18, 2024
Preparation for #3935

Changes:
- Add some `default-features = false` for the case that a crate and that
dependency both support nostd builds.
- Shuffle files around of some benchmarking-only crates. These
conditionally disabled the `cfg_attr` for nostd and pulled in libstd.
Example [here](ggwpez/zepter#95). The actual
logic is moved into a `inner.rs` to preserve nostd capability of the
crate in case the benchmarking feature is disabled.
- Add some `use sp_std::vec` where needed.
- Remove some `optional = true` in cases where it was not optional.
- Removed one superfluous `cfg_attr(not(feature = "std"), no_std..`.

All in all this should be logical no-op.

---------

Signed-off-by: Oliver Tale-Yazdi <[email protected]>
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