From c1a3b0cb0af3c0639ce09b2a17a3cc90977346fe Mon Sep 17 00:00:00 2001
From: kristopher tate <kt@connectfree.co.jp>
Date: Sat, 28 Jul 2018 15:23:09 +0900
Subject: src/ir.cpp: add/throw error for @handle() in a non async context;

Tracking Issue #1296 ;
Thanks @andrewrk ;
---
 src/ir.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/ir.cpp')

diff --git a/src/ir.cpp b/src/ir.cpp
index 50c8c70290..1e9d1bdb7e 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -3858,6 +3858,8 @@ static IrInstruction *ir_gen_builtin_fn_call(IrBuilder *irb, Scope *scope, AstNo
         return irb->codegen->invalid_instruction;
     }
 
+    bool is_async = exec_is_async(irb->exec);
+
     switch (builtin_fn->id) {
         case BuiltinFnIdInvalid:
             zig_unreachable();
@@ -4491,6 +4493,10 @@ static IrInstruction *ir_gen_builtin_fn_call(IrBuilder *irb, Scope *scope, AstNo
         case BuiltinFnIdFrameAddress:
             return ir_lval_wrap(irb, scope, ir_build_frame_address(irb, scope, node), lval);
         case BuiltinFnIdHandle:
+            if (!is_async) {
+                add_node_error(irb->codegen, node, buf_sprintf("@handle() in non-async function"));
+                return irb->codegen->invalid_instruction;
+            }
             return ir_lval_wrap(irb, scope, ir_build_handle(irb, scope, node), lval);
         case BuiltinFnIdAlignOf:
             {
-- 
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