Fix panics

boa-dev · Mar 21, 2023 · 766f809 · 766f809
1 parent 7772f2c
commit 766f809
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Showing 3 changed files with 3 additions and 6 deletions.
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/boa_engine/src/bytecompiler/expression/mod.rs b/boa_engine/src/bytecompiler/expression/mod.rs
@@ -176,6 +176,7 @@ impl ByteCompiler<'_, '_> {
                     self.emit_opcode(Opcode::Await);
                     let (skip_yield, skip_yield_await) =
                         self.emit_opcode_with_two_operands(Opcode::AsyncGeneratorNext);
+                    self.emit_opcode(Opcode::PushUndefined);
                     self.emit_opcode(Opcode::Yield);
                     self.emit_opcode(Opcode::GeneratorNext);
                     self.patch_jump(skip_yield);

diff --git a/boa_engine/src/vm/mod.rs b/boa_engine/src/vm/mod.rs
@@ -288,11 +288,7 @@ impl Context<'_> {
                     return CompletionRecord::Normal(result);
                 }
                 EarlyReturnType::Yield => {
-                    let result = self
-                        .vm
-                        .stack
-                        .pop()
-                        .expect("Yield must always return a result.");
+                    let result = self.vm.pop();
                     self.vm.frame_mut().early_return = None;
                     return CompletionRecord::Return(result);
                 }