diff --git a/Cargo.lock b/Cargo.lock
index f8159d06..1e0d6242 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1160,7 +1160,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_builtins"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "chrono",
  "fast-float",
@@ -1185,7 +1185,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_bytecode"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "num-bigint",
  "oxide_log",
@@ -1193,7 +1193,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cfg"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "oxide_bytecode",
  "oxide_emit",
@@ -1204,7 +1204,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cli"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "ansi_term",
  "bumpalo",
@@ -1226,7 +1226,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_code_cache"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "lru",
  "oxide_bytecode",
@@ -1235,7 +1235,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_compiler"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1255,7 +1255,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_dce"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1269,7 +1269,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_emit"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "num-bigint",
  "oxc_allocator",
@@ -1284,7 +1284,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_engine"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1296,7 +1296,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_ir"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "oxide_bytecode",
  "oxide_log",
@@ -1305,7 +1305,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_kernel"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1319,7 +1319,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_liveness"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1331,7 +1331,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_log"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "tracing",
  "tracing-appender",
@@ -1340,7 +1340,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_parser"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "oxc_allocator",
  "oxc_ast",
@@ -1355,7 +1355,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_regalloc"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1371,7 +1371,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_runtime_api"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "num-bigint",
  "num-traits",
@@ -1384,7 +1384,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_test262"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1402,7 +1402,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_types"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1415,7 +1415,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_vm"
-version = "0.13.13"
+version = "0.13.14"
 dependencies = [
  "bumpalo",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index 33448c26..3df1d5af 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.13.13"
+version = "0.13.14"
 edition = "2021"
 license = "MIT"
 rust-version = "1.80"
diff --git a/crates/oxide_vm/src/dispatch/call.rs b/crates/oxide_vm/src/dispatch/call.rs
index 12ae7788..1fffc979 100644
--- a/crates/oxide_vm/src/dispatch/call.rs
+++ b/crates/oxide_vm/src/dispatch/call.rs
@@ -137,8 +137,14 @@ impl Vm {
                             let sub = self.callee_module(obj);
                             if matches!(sub, Some(m) if m.is_async || m.is_generator) {
                                 self.constructing_native = false;
+                                let gen_pc = self.pc;
                                 let result = self.call_bytecode_function_inline(callee, obj, this, &args)?;
-                                self.regs[0] = result;
+                                // 参数初始化抛错已就地展开（unwind 改写 pc 至 catch）：异常值已
+                                // 写入 catch 参数，再写结果寄存器会覆盖之——仅在初始化成功（pc 未动）
+                                // 时交付结果。
+                                if self.pc == gen_pc {
+                                    self.regs[0] = result;
+                                }
                                 return Ok(());
                             }
                         }
diff --git a/crates/oxide_vm/tests/builtins_function_tests.rs b/crates/oxide_vm/tests/builtins_function_tests.rs
index b59da845..05c3d244 100644
--- a/crates/oxide_vm/tests/builtins_function_tests.rs
+++ b/crates/oxide_vm/tests/builtins_function_tests.rs
@@ -450,3 +450,28 @@ fn function_bind_async_generator_target_returns_iterator() {
     let result = eval(&mut vm, "async function* g(){ return 99; } typeof g.bind(null)()").unwrap();
     assert_eq!(vm.lookup_str(result).unwrap_or_default(), "object");
 }
+
+#[test]
+fn function_call_generator_param_default_throw_keeps_catch_value() {
+    // 生成器目标带抛错的参数默认值，经 call/apply/bind 调用且调用点在 try/catch 内：
+    // catch 参数须是抛出的原值 42，不得被占位迭代器对象覆盖。
+    let mut vm = Vm::new();
+    let result = eval(
+        &mut vm,
+        "function* g(x = (function(){ throw 42; })()) { yield 1; } try { g.call(null); } catch (e) { e; }",
+    )
+    .unwrap();
+    assert_eq!(result, JsValue::int(42));
+    let result = eval(
+        &mut vm,
+        "function* g(x = (function(){ throw 42; })()) { yield 1; } try { g.apply(null, []); } catch (e) { e; }",
+    )
+    .unwrap();
+    assert_eq!(result, JsValue::int(42));
+    let result = eval(
+        &mut vm,
+        "function* g(x = (function(){ throw 42; })()) { yield 1; } try { g.bind(null)(); } catch (e) { e; }",
+    )
+    .unwrap();
+    assert_eq!(result, JsValue::int(42));
+}