1 files changed, 43 insertions, 0 deletions
diff --git a/third_party/rust/wasm-smith/tests/common/mod.rs b/third_party/rust/wasm-smith/tests/common/mod.rs
new file mode 100644
index 0000000000..cc24eed278
--- /dev/null
+++ b/third_party/rust/wasm-smith/tests/common/mod.rs
@@ -0,0 +1,43 @@
+use wasm_smith::Config;
+use wasmparser::{types::Types, Validator, WasmFeatures};
+
+pub fn parser_features_from_config(config: &Config) -> WasmFeatures {
+    WasmFeatures {
+        mutable_global: true,
+        saturating_float_to_int: config.saturating_float_to_int_enabled,
+        sign_extension: config.sign_extension_ops_enabled,
+        reference_types: config.reference_types_enabled,
+        multi_value: config.multi_value_enabled,
+        bulk_memory: config.bulk_memory_enabled,
+        simd: config.simd_enabled,
+        relaxed_simd: config.relaxed_simd_enabled,
+        multi_memory: config.max_memories > 1,
+        exceptions: config.exceptions_enabled,
+        memory64: config.memory64_enabled,
+        tail_call: config.tail_call_enabled,
+        function_references: config.gc_enabled,
+        gc: config.gc_enabled,
+
+        threads: false,
+        floats: true,
+        extended_const: false,
+        component_model: false,
+        memory_control: false,
+        component_model_values: false,
+        component_model_nested_names: false,
+    }
+}
+
+pub fn validate(validator: &mut Validator, bytes: &[u8]) -> Types {
+    let err = match validator.validate_all(bytes) {
+        Ok(types) => return types,
+        Err(e) => e,
+    };
+    eprintln!("Writing Wasm to `test.wasm`");
+    drop(std::fs::write("test.wasm", &bytes));
+    if let Ok(text) = wasmprinter::print_bytes(bytes) {
+        eprintln!("Writing WAT to `test.wat`");
+        drop(std::fs::write("test.wat", &text));
+    }
+    panic!("wasm failed to validate: {}", err);
+}