Commit be551d85b7

@@ -1728,7 +1728,7 @@ fn renderNode(c: *Context, node: Node) Allocator.Error!NodeIndex {
         },
         .field_access => {
             const payload = node.castTag(.field_access).?.data;
-            const lhs = try renderNode(c, payload.lhs);
+            const lhs = try renderNodeGrouped(c, payload.lhs);
             return renderFieldAccess(c, lhs, payload.field_name);
         },
         .@"struct", .@"union" => return renderRecord(c, node),
@@ -2073,7 +2073,7 @@ fn renderNullSentinelArrayType(c: *Context, len: usize, elem_type: Node) !NodeIn
         .main_token = l_bracket,
         .data = .{
             .lhs = len_expr,
-            .rhs = try c.addExtra(std.zig.ast.Node.ArrayTypeSentinel {
+            .rhs = try c.addExtra(std.zig.ast.Node.ArrayTypeSentinel{
                 .sentinel = sentinel_expr,
                 .elem_type = elem_type_expr,
             }),

@@ -3,6 +3,22 @@ const std = @import("std");
 const CrossTarget = std.zig.CrossTarget;
 
 pub fn addCases(cases: *tests.TranslateCContext) void {
+    cases.add("field access is grouped if necessary",
+        \\unsigned long foo(unsigned long x) {
+        \\    return ((union{unsigned long _x}){x})._x;
+        \\}
+    , &[_][]const u8{
+        \\pub export fn foo(arg_x: c_ulong) c_ulong {
+        \\    var x = arg_x;
+        \\    const union_unnamed_1 = extern union {
+        \\        _x: c_ulong,
+        \\    };
+        \\    return (union_unnamed_1{
+        \\        ._x = x,
+        \\    })._x;
+        \\}
+    });
+
     cases.add("unnamed child types of typedef receive typedef's name",
         \\typedef enum {
         \\    FooA,