Fix tagged template this in strict mode (#3307)

In strict mode `this` should be undefined.
boa-dev · Sep 25, 2023 · fd2e558 · fd2e558
1 parent 1b03f83
commit fd2e558
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Showing 2 changed files with 2 additions and 4 deletions.
diff --git a/boa_engine/src/bytecompiler/expression/mod.rs b/boa_engine/src/bytecompiler/expression/mod.rs
@@ -243,9 +243,8 @@ impl ByteCompiler<'_, '_> {
                         self.emit(Opcode::GetPrivateField, &[Operand::U32(index)]);
                     }
                     expr => {
+                        self.emit_opcode(Opcode::PushUndefined);
                         self.compile_expr(expr, true);
-                        self.emit_opcode(Opcode::This);
-                        self.emit_opcode(Opcode::Swap);
                     }
                 }
 

diff --git a/boa_engine/src/bytecompiler/mod.rs b/boa_engine/src/bytecompiler/mod.rs
@@ -1441,9 +1441,8 @@ impl<'ctx, 'host> ByteCompiler<'ctx, 'host> {
                         kind = CallKind::CallEval;
                     }
                 }
-                self.compile_expr(expr, true);
                 self.emit_opcode(Opcode::PushUndefined);
-                self.emit_opcode(Opcode::Swap);
+                self.compile_expr(expr, true);
             }
             expr => {
                 self.compile_expr(expr, true);