From: Matt Corallo <git@bluematt.me>
Date: Sun, 25 Sep 2022 14:24:13 +0000 (+0000)
Subject: Don't make references to `std` in `lightning-invoice` in bindings
X-Git-Tag: v0.0.112~25^2
X-Git-Url: http://git.bitcoin.ninja/?a=commitdiff_plain;h=refs%2Fheads%2F2022-09-invoice-bindings-nostd;p=rust-lightning

Don't make references to `std` in `lightning-invoice` in bindings

As we support `no-std` for `lightning-invoice` builds, we should
support them in `c_bindings` as well, which we add a test for in
CI here.
---

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index be52e0577..49b857c39 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -127,6 +127,8 @@ jobs:
           cargo test --verbose --color always --no-default-features --features no-std
           # check if there is a conflict between no-std and the default std feature
           cargo test --verbose --color always --features no-std
+          # check if there is a conflict between no-std and the c_bindings cfg
+          RUSTFLAGS="--cfg=c_bindings" cargo test --verbose --color always --no-default-features --features=no-std
           # check no-std compatibility across dependencies
           cd ..
           cd no-std-check
diff --git a/lightning-invoice/src/payment.rs b/lightning-invoice/src/payment.rs
index a1c0db58f..ee85fab0b 100644
--- a/lightning-invoice/src/payment.rs
+++ b/lightning-invoice/src/payment.rs
@@ -1913,7 +1913,7 @@ mod tests {
 
 	#[cfg(c_bindings)]
 	impl lightning::util::ser::Writeable for TestScorer {
-		fn write<W: lightning::util::ser::Writer>(&self, _: &mut W) -> Result<(), std::io::Error> { unreachable!(); }
+		fn write<W: lightning::util::ser::Writer>(&self, _: &mut W) -> Result<(), lightning::io::Error> { unreachable!(); }
 	}
 
 	impl Score for TestScorer {
diff --git a/lightning-invoice/src/utils.rs b/lightning-invoice/src/utils.rs
index 5faecbfab..d7185c999 100644
--- a/lightning-invoice/src/utils.rs
+++ b/lightning-invoice/src/utils.rs
@@ -559,7 +559,7 @@ impl<'a, S: Score> ScorerAccountingForInFlightHtlcs<'a, S> {
 
 #[cfg(c_bindings)]
 impl<'a, S:Score> lightning::util::ser::Writeable for ScorerAccountingForInFlightHtlcs<'a, S> {
-	fn write<W: lightning::util::ser::Writer>(&self, writer: &mut W) -> Result<(), std::io::Error> { self.scorer.write(writer) }
+	fn write<W: lightning::util::ser::Writer>(&self, writer: &mut W) -> Result<(), lightning::io::Error> { self.scorer.write(writer) }
 }
 
 impl<'a, S: Score> Score for ScorerAccountingForInFlightHtlcs<'a, S> {