From 587ef60a28ae7c1c780e02ecf60b331ead53bc7f Mon Sep 17 00:00:00 2001
From: Veikka Tuominen <git@vexu.eu>
Date: Fri, 25 Nov 2022 02:40:06 +0200
Subject: Sema: resolve union fields before using getTagType

Closes #13649
---
 src/Sema.zig | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/Sema.zig b/src/Sema.zig
index 65bdf7e1e0..d6a563bd36 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -7580,7 +7580,8 @@ fn zirEnumToInt(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!A
     const enum_tag: Air.Inst.Ref = switch (operand_ty.zigTypeTag()) {
         .Enum => operand,
         .Union => blk: {
-            const tag_ty = operand_ty.unionTagType() orelse {
+            const union_ty = try sema.resolveTypeFields(operand_ty);
+            const tag_ty = union_ty.unionTagType() orelse {
                 return sema.fail(
                     block,
                     operand_src,
@@ -22713,7 +22714,8 @@ fn fieldPtr(
                             return inst;
                         }
                     }
-                    if (child_type.unionTagType()) |enum_ty| {
+                    const union_ty = try sema.resolveTypeFields(child_type);
+                    if (union_ty.unionTagType()) |enum_ty| {
                         if (enum_ty.enumFieldIndex(field_name)) |field_index| {
                             const field_index_u32 = @intCast(u32, field_index);
                             var anon_decl = try block.startAnonDecl();
-- 
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