From 943176bbfcf3125451fa64e082ee357c28e70413 Mon Sep 17 00:00:00 2001
From: Will Lillis <wlillis@umass.edu>
Date: Mon, 23 Sep 2024 16:04:24 -0400
Subject: fix: Add error note when attempt is made to destructure error union
 (#21491)

closes #21417
---
 src/Sema.zig | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/Sema.zig b/src/Sema.zig
index 14a4061b00..40556d2136 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -5428,6 +5428,9 @@ fn zirValidateDestructure(sema: *Sema, block: *Block, inst: Zir.Inst.Index) Comp
             const msg = try sema.errMsg(src, "type '{}' cannot be destructured", .{operand_ty.fmt(pt)});
             errdefer msg.destroy(sema.gpa);
             try sema.errNote(destructure_src, msg, "result destructured here", .{});
+            if (operand_ty.zigTypeTag(pt.zcu) == .error_union) {
+                try sema.errNote(src, msg, "consider using 'try', 'catch', or 'if'", .{});
+            }
             break :msg msg;
         });
     }
-- 
cgit v1.2.3