diff options
Diffstat (limited to 'src/codegen/c.zig')
| -rw-r--r-- | src/codegen/c.zig | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/codegen/c.zig b/src/codegen/c.zig index 9b74a48a1a..e7dadf6df2 100644 --- a/src/codegen/c.zig +++ b/src/codegen/c.zig @@ -1140,10 +1140,16 @@ pub const DeclGen = struct { const index = ty.unionTagFieldIndex(union_obj.tag, dg.module).?; const field_ty = ty.unionFields().values()[index].ty; const field_name = ty.unionFields().keys()[index]; + var it = ty.unionFields().iterator(); if (field_ty.hasRuntimeBits()) { try writer.print(".{ } = ", .{fmtIdent(field_name)}); try dg.renderValue(writer, field_ty, union_obj.val, .Initializer); - } else try writer.writeByte('0'); + } else while (it.next()) |field| { + if (!field.value_ptr.ty.hasRuntimeBits()) continue; + try writer.print(".{ } = ", .{fmtIdent(field.key_ptr.*)}); + try dg.renderValue(writer, field.value_ptr.ty, Value.undef, .Initializer); + break; + } else try writer.writeAll(".empty_union = 0"); if (ty.unionTagTypeSafety()) |_| try writer.writeByte('}'); try writer.writeByte('}'); }, |