Update to parity-wasm 0.42.2

based on @jiayihu's proposal in f7235e1

Author: ithinuel

Cargo.toml

@@ -13,7 +13,7 @@ exclude = [ "/res/*", "/tests/*", "/fuzz/*", "/benches/*" ]
 
 [dependencies]
 validation = { package = "wasmi-validation", version = "0.3", path = "validation", default-features = false }
-parity-wasm = { version = "0.41.0", default-features = false }
+parity-wasm = { version = "0.42.0", default-features = false }
 memory_units = "0.3.0"
 libm = { version = "0.2.1", optional = true }
 num-rational = { version = "0.2.2", default-features = false }

src/prepare/mod.rs

@@ -154,7 +154,7 @@ pub fn deny_floating_point(module: &Module) -> Result<(), Error> {
                         if func
                             .params()
                             .iter()
-                            .chain(func.return_type().as_ref())
+                            .chain(func.results().first())
                             .any(|&typ| typ == ValueType::F32 || typ == ValueType::F64)
                         {
                             return Err(Error("Use of floating point types denied".to_string()));

src/types.rs

@@ -65,7 +65,10 @@ impl Signature {
                 .cloned()
                 .map(ValueType::from_elements)
                 .collect(),
-            return_type: func_type.return_type().map(ValueType::from_elements),
+            return_type: func_type
+                .results()
+                .first()
+                .map(|vty| ValueType::from_elements(*vty)),
         }
     }
 }

validation/Cargo.toml

@@ -1,14 +1,14 @@
 [package]
 name = "wasmi-validation"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Parity Technologies <[email protected]>"]
 edition = "2018"
 license = "MIT/Apache-2.0"
 repository = "https://github.com/paritytech/wasmi"
 description = "Wasm code validator"
 
 [dependencies]
-parity-wasm = { version = "0.41.0", default-features = false }
+parity-wasm = { version = "0.42.0", default-features = false }
 
 [dev-dependencies]
 assert_matches = "1.1"

validation/src/context.rs

@@ -63,8 +63,9 @@ impl ModuleContext {
 
         let params = ty.params();
         let return_ty = ty
-            .return_type()
-            .map(BlockType::Value)
+            .results()
+            .first()
+            .map(|vty| BlockType::Value(*vty))
             .unwrap_or(BlockType::NoResult);
         Ok((params, return_ty))
     }

validation/src/tests.rs

@@ -201,7 +201,7 @@ fn funcs() {
     let m = module()
         .function()
         .signature()
-        .return_type()
+        .result()
         .i32()
         .build()
         .body()
@@ -213,7 +213,7 @@ fn funcs() {
         .build()
         .function()
         .signature()
-        .return_type()
+        .result()
         .i32()
         .build()
         .body()