Wasmtime 40

Author: jeffcharles

Cargo.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    wasmtime (39.0.1)
+    wasmtime (40.0.0)
       rb_sys (~> 0.9.124)
 
 GEM

Gemfile.lock

@@ -24,8 +24,8 @@ magnus = { version = "0.8", features = ["rb-sys"] }
 rb-sys = { version = "*", default-features = false, features = [
   "stable-api-compiled-fallback",
 ] }
-wasmtime = { version = "=39.0.1", features = ["memory-protection-keys"] }
-wasmtime-wasi = "=39.0.1"
+wasmtime = { version = "=40.0.0", features = ["memory-protection-keys"] }
+wasmtime-wasi = "=40.0.0"
 cap-std = "4.0.0"
 wat = "1.244.0"
 tokio = { version = "1.47.1", features = [
@@ -38,8 +38,8 @@ async-timer = { version = "1.0.0-beta.15", features = [
   "tokio1",
 ], optional = true }
 static_assertions = "1.1.0"
-wasmtime-environ = "=39.0.1"
-deterministic-wasi-ctx = { version = "=3.0.4" }
+wasmtime-environ = "=40.0.0"
+deterministic-wasi-ctx = { version = "=3.0.5" }
 
 [build-dependencies]
 rb-sys-env = "0.2.2"

ext/Cargo.toml

@@ -137,8 +137,12 @@ impl From<ComponentImpl> for Component {
         let start = range.start;
         let end = range.end;
 
-        assert!(end > start);
-        let size = unsafe { end.offset_from(start) };
+        let size = if end > start {
+            unsafe { end.offset_from(start) }
+        } else {
+            // Happens when component does not contain any Wasm functions.
+            0
+        };
 
         Self {
             inner,

ext/src/ruby_api/component.rs

@@ -142,8 +142,7 @@ impl From<ModuleImpl> for Module {
         let size = if end > start {
             unsafe { end.offset_from(start) }
         } else {
-            // This is mostly a safety mechanism; this should never happen if
-            // things are correctly configured.
+            // Happens when module does not contain any Wasm functions.
             0
         };
 

ext/src/ruby_api/module.rs

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Wasmtime
-  VERSION = "39.0.1"
+  VERSION = "40.0.0"
 end

lib/wasmtime/version.rb

@@ -58,7 +58,7 @@ module Component
           tmpfile = create_tmpfile(Component.new(engine, "(component)").serialize)
           component, increase_bytes = measure_gc_stat(:malloc_increase_bytes) { Component.deserialize_file(engine, tmpfile) }
 
-          expect(increase_bytes).to be > File.size(tmpfile)
+          expect(increase_bytes).to be > 0
           expect(component).to be_a(Component)
         end
 
@@ -80,7 +80,7 @@ def create_tmpfile(content)
           serialized = Component.new(engine, "(component)").serialize
           component, increase_bytes = measure_gc_stat(:malloc_increase_bytes) { Component.deserialize(engine, serialized) }
 
-          expect(increase_bytes).to be > serialized.bytesize
+          expect(increase_bytes).to be > 0
           expect(component).to be_a(Wasmtime::Component::Component)
         end
       end

spec/unit/component/component_spec.rb

@@ -60,7 +60,7 @@ module Wasmtime
         tmpfile = create_tmpfile(Module.new(engine, "(module)").serialize)
         mod, increase_bytes = measure_gc_stat(:malloc_increase_bytes) { Module.deserialize_file(engine, tmpfile) }
 
-        expect(increase_bytes).to be > File.size(tmpfile)
+        expect(increase_bytes).to be > 0
         expect(mod).to be_a(Wasmtime::Module)
       end
 
@@ -82,7 +82,7 @@ def create_tmpfile(content)
         serialized = Module.new(engine, wat).serialize
         mod, increase_bytes = measure_gc_stat(:malloc_increase_bytes) { Module.deserialize(engine, serialized) }
 
-        expect(increase_bytes).to be > serialized.bytesize
+        expect(increase_bytes).to be > 0
         expect(mod).to be_a(Wasmtime::Module)
       end
     end