chore: Use cfg(fuzz) instead of feature

.github/workflows/check.yml

@@ -105,6 +105,7 @@ jobs:
     runs-on: [kuberunner, github-runner-01]
     env:
       RUSTUP_HOME: /tmp/rustup_home
+      RUSTFLAGS: "--cfg fuzz"
     steps:
       - name: Cancel Previous Runs
         if: ${{ github.event_name == 'pull_request' }}

Cargo.toml

@@ -551,6 +551,9 @@ fs4 = "0.11.1"                                               # utils/gear-wasmer
 bytes = "1.8.0"                                              # utils/gear-wasmer-cache
 loom = "0.7.2"                                               # utils/gear-wasmer-cache
 
+[workspace.lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(loom)', 'cfg(fuzz)'] }
+
 [profile.dev.package.corosensei]
 opt-level = 3
 

common/Cargo.toml

@@ -12,12 +12,14 @@ homepage.workspace = true
 repository.workspace = true
 rust-version.workspace = true
 
+[lints]
+workspace = true
+
 [dependencies]
 primitive-types = { workspace = true, features = ["scale-info"] }
 log.workspace = true
 derive_more.workspace = true
 enum-iterator.workspace = true
-fail = { workspace = true, features = [ "failpoints" ], optional = true }
 
 # Internal deps
 gear-core.workspace = true
@@ -35,6 +37,9 @@ frame-support.workspace = true
 frame-system = { workspace = true, optional = true }
 frame-benchmarking = { workspace = true, optional = true }
 
+[target.'cfg(fuzz)'.dependencies]
+fail = { workspace = true, features = [ "failpoints" ] }
+
 [dev-dependencies]
 hex-literal.workspace = true
 proptest.workspace = true
@@ -59,4 +64,3 @@ runtime-benchmarks = [
     "frame-support/runtime-benchmarks",
     "gear-wasm-instrument",
 ]
-fuzz = ["fail"]

common/src/gas_provider/internal.rs

@@ -556,7 +556,7 @@ where
         let key = key.into();
         let mut node = Self::get_node(key).ok_or_else(InternalError::node_not_found)?;
 
-        #[cfg(feature = "fuzz")]
+        #[cfg(fuzz)]
         {
             let s = fail::FailScenario::setup();
             // This is a fail point with name `fail_fuzzer`.

pallets/gas/Cargo.toml

@@ -66,4 +66,3 @@ runtime-benchmarks = [
 	"parity-wasm",
 ]
 try-runtime = ["frame-support/try-runtime"]
-fuzz = ["common/fuzz"]

pallets/gear/Cargo.toml

@@ -9,6 +9,9 @@ homepage.workspace = true
 repository.workspace = true
 readme = "README.md"
 
+[lints]
+workspace = true
+
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]
 
@@ -204,4 +207,3 @@ runtime-benchmarks = [
 ]
 runtime-benchmarks-checkers = []
 try-runtime = ["frame-support/try-runtime"]
-fuzz = ["pallet-gear-gas/fuzz", "common/fuzz"]

pallets/gear/src/schedule.rs

@@ -56,12 +56,12 @@ pub const INSTR_BENCHMARK_BATCH_SIZE: u32 = 500;
 /// To avoid potential stack overflow problems we have a panic in sandbox in case,
 /// execution is ended with stack overflow error. So, process queue execution will be
 /// stopped and we will be able to investigate the problem and decrease this constant if needed.
-#[cfg(not(feature = "fuzz"))]
+#[cfg(not(fuzz))]
 pub const STACK_HEIGHT_LIMIT: u32 = 36_743;
 
 /// For the fuzzer, we take the maximum possible stack limit calculated by the `calc-stack-height`
 /// utility, which would be suitable for Linux machines. This has a positive effect on code coverage.
-#[cfg(feature = "fuzz")]
+#[cfg(fuzz)]
 pub const FUZZER_STACK_HEIGHT_LIMIT: u32 = 65_000;
 
 /// Maximum number of data segments in a wasm module.
@@ -823,9 +823,9 @@ impl<T: Config> Default for Schedule<T> {
 impl Default for Limits {
     fn default() -> Self {
         Self {
-            #[cfg(not(feature = "fuzz"))]
+            #[cfg(not(fuzz))]
             stack_height: Some(STACK_HEIGHT_LIMIT),
-            #[cfg(feature = "fuzz")]
+            #[cfg(fuzz)]
             stack_height: Some(FUZZER_STACK_HEIGHT_LIMIT),
             data_segments_amount: DATA_SEGMENTS_AMOUNT_LIMIT,
             globals: 256,

runtime/vara/Cargo.toml

@@ -11,6 +11,9 @@ build = "build.rs"
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]
 
+[lints]
+workspace = true
+
 [dependencies]
 const-str.workspace = true
 log.workspace = true
@@ -281,6 +284,5 @@ try-runtime = [
 	"pallet-bags-list/try-runtime",
 	"runtime-common/try-runtime",
 ]
-fuzz = ["common/fuzz", "pallet-gear/fuzz", "pallet-gear-gas/fuzz"]
 dev = ["pallet-gear-debug", "pallet-gear-eth-bridge", "pallet-sudo"]
 metadata-hash = ["substrate-wasm-builder?/metadata-hash"]

runtime/vara/build.rs

@@ -19,7 +19,7 @@
 #[cfg(all(feature = "std", not(feature = "metadata-hash")))]
 fn main() {
     substrate_build_script_utils::generate_cargo_keys();
-    #[cfg(all(feature = "std", not(feature = "fuzz")))]
+    #[cfg(all(feature = "std", not(fuzz)))]
     {
         substrate_wasm_builder::WasmBuilder::build_using_defaults()
     }
@@ -28,7 +28,7 @@ fn main() {
 #[cfg(all(feature = "std", feature = "metadata-hash"))]
 fn main() {
     substrate_build_script_utils::generate_cargo_keys();
-    #[cfg(all(feature = "std", not(feature = "fuzz")))]
+    #[cfg(all(feature = "std", not(fuzz)))]
     {
         substrate_wasm_builder::WasmBuilder::init_with_defaults()
             .enable_metadata_hash("VARA", 12)

runtime/vara/src/lib.rs

@@ -24,7 +24,7 @@
 #![allow(non_local_definitions)]
 
 // Make the WASM binary available.
-#[cfg(all(feature = "std", not(feature = "fuzz")))]
+#[cfg(all(feature = "std", not(fuzz)))]
 include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
 
 use common::{storage::Messenger, DelegateFee};

scripts/src/build.sh

@@ -26,11 +26,11 @@ EOF
 }
 
 gear_build() {
-  $CARGO build --workspace "$@" --exclude runtime-fuzzer --exclude runtime-fuzzer-fuzz
+  $CARGO build --workspace "$@"
 }
 
 fuzzer_build() {
-  $CARGO build "$@" -p runtime-fuzzer -p runtime-fuzzer-fuzz
+  RUSTFLAGS="--cfg fuzz" $CARGO build "$@" -p runtime-fuzzer -p runtime-fuzzer-fuzz
 }
 
 node_build() {

scripts/src/check.sh

@@ -20,11 +20,11 @@ EOF
 }
 
 gear_check() {
-  echo "  >> Check workspace without crates that use runtime with 'fuzz' feature"
-  __GEAR_WASM_BUILDER_NO_BUILD=1 SKIP_WASM_BUILD=1 SKIP_VARA_RUNTIME_WASM_BUILD=1 cargo check --workspace "$@" --exclude runtime-fuzzer --exclude runtime-fuzzer-fuzz
+  echo "  >> Check workspace"
+  __GEAR_WASM_BUILDER_NO_BUILD=1 SKIP_WASM_BUILD=1 SKIP_VARA_RUNTIME_WASM_BUILD=1 cargo check --workspace "$@"
 
-  echo "  >> Check crates that use runtime with 'fuzz' feature"
-  cargo check "$@" -p runtime-fuzzer -p runtime-fuzzer-fuzz
+  echo "  >> Check crates that use 'cfg(fuzz)"
+  RUSTFLAGS="--cfg fuzz" cargo check "$@" -p gear-common -p vara-runtime -p runtime-fuzzer -p runtime-fuzzer-fuzz
 }
 
 runtime_imports() {

scripts/src/test.sh

@@ -99,14 +99,16 @@ run_fuzzer() {
   fi
 
   # Run fuzzer
-  RUST_LOG="$LOG_TARGETS" cargo fuzz run --release --sanitizer=none main $CORPUS_DIR -- -rss_limit_mb=$RSS_LIMIT_MB -max_len=$MAX_LEN -len_control=0
+  RUSTFLAGS="--cfg fuzz" RUST_LOG="$LOG_TARGETS" \
+    cargo fuzz run --release --sanitizer=none main $CORPUS_DIR -- -rss_limit_mb=$RSS_LIMIT_MB -max_len=$MAX_LEN -len_control=0
 }
 
 run_lazy_pages_fuzzer() {
   . $(dirname "$SELF")/fuzzer_consts.sh
 
   ROOT_DIR="$1"
   CORPUS_DIR="$2"
+  RUSTFLAGS="--cfg fuzz"
 
   # Navigate to lazy pages fuzzer dir
   cd $ROOT_DIR/utils/lazy-pages-fuzzer
@@ -122,7 +124,7 @@ run_lazy_pages_fuzzer() {
 
 run_fuzzer_tests() {
   # This includes property tests for runtime-fuzzer.
-  cargo nextest run -p runtime-fuzzer
+  RUSTFLAGS="--cfg fuzz" cargo nextest run -p runtime-fuzzer
 }
 
 # TODO this is likely to be merged with `pallet_test` or `workspace_test` in #1802
@@ -134,7 +136,7 @@ doc_test() {
   MANIFEST="$1"
   shift
 
-  __GEAR_WASM_BUILDER_NO_BUILD=1 SKIP_WASM_BUILD=1 SKIP_VARA_RUNTIME_WASM_BUILD=1 $CARGO test --doc --workspace --exclude runtime-fuzzer --exclude runtime-fuzzer-fuzz --manifest-path="$MANIFEST" --no-fail-fast "$@"
+  __GEAR_WASM_BUILDER_NO_BUILD=1 SKIP_WASM_BUILD=1 SKIP_VARA_RUNTIME_WASM_BUILD=1 $CARGO test --doc --workspace --manifest-path="$MANIFEST" --no-fail-fast "$@"
 }
 
 time_consuming_tests() {

utils/gear-wasmer-cache/Cargo.toml

@@ -8,8 +8,8 @@ homepage.workspace = true
 repository.workspace = true
 rust-version.workspace = true
 
-[lints.rust]
-unexpected_cfgs = { level = "warn", check-cfg = ['cfg(loom)'] }
+[lints]
+workspace = true
 
 [dependencies]
 wasmer.workspace = true

utils/runtime-fuzzer/Cargo.toml

@@ -25,7 +25,7 @@ runtime-primitives.workspace = true
 gear-common.workspace = true
 gear-core.workspace = true
 gear-utils.workspace = true
-vara-runtime = { workspace = true, features = ["std", "dev", "fuzz"] }
+vara-runtime = { workspace = true, features = ["std", "dev"] }
 pallet-gear.workspace = true
 pallet-gear-bank.workspace = true