Fix result loc unwrapping with optional in error union

Fixes #2899

1 files changed, 12 insertions, 0 deletions

diff --git a/test/stage1/behavior/misc.zig b/test/stage1/behavior/misc.zig
index cffe1faebe..ab16b08be8 100644
--- a/test/stage1/behavior/misc.zig
+++ b/test/stage1/behavior/misc.zig
@@ -754,3 +754,15 @@ test "nested optional field in struct" {
     };
     expect(s.x.?.y == 127);
 }
+
+fn maybe(x: bool) anyerror!?u32 {
+    return switch (x) {
+        true => u32(42),
+        else => null,
+    };
+}
+
+test "result location is optional inside error union" {
+    const x = maybe(true) catch unreachable;
+    expect(x.? == 42);
+}