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diff --git a/src/test/debuginfo/struct-style-enum-legacy.rs b/src/test/debuginfo/struct-style-enum-legacy.rs
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+++ b/src/test/debuginfo/struct-style-enum-legacy.rs
@@ -0,0 +1,115 @@
+// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// ignore-tidy-linelength
+// min-lldb-version: 310
+
+// As long as LLVM 5 and LLVM 6 are supported, we want to test the
+// enum debuginfo fallback mode.  Once those are desupported, this
+// test can be removed, as there is another (non-"legacy") test that
+// tests the new mode.
+// ignore-llvm-version: 7.0 - 9.9.9
+// ignore-gdb-version: 7.11.90 - 7.12.9
+// ignore-gdb-version: 8.2 - 9.9
+
+// compile-flags:-g
+
+// === GDB TESTS ===================================================================================
+
+// gdb-command:set print union on
+// gdb-command:run
+
+// gdb-command:print case1
+// gdbg-check:$1 = {{RUST$ENUM$DISR = Case1, a = 0, b = 31868, c = 31868, d = 31868, e = 31868}, {RUST$ENUM$DISR = Case1, [...]}, {RUST$ENUM$DISR = Case1, [...]}}
+// gdbr-check:$1 = struct_style_enum_legacy::Regular::Case1{a: 0, b: 31868, c: 31868, d: 31868, e: 31868}
+
+// gdb-command:print case2
+// gdbg-check:$2 = {{RUST$ENUM$DISR = Case2, [...]}, {RUST$ENUM$DISR = Case2, a = 0, b = 286331153, c = 286331153}, {RUST$ENUM$DISR = Case2, [...]}}
+// gdbr-check:$2 = struct_style_enum_legacy::Regular::Case2{a: 0, b: 286331153, c: 286331153}
+
+// gdb-command:print case3
+// gdbg-check:$3 = {{RUST$ENUM$DISR = Case3, [...]}, {RUST$ENUM$DISR = Case3, [...]}, {RUST$ENUM$DISR = Case3, a = 0, b = 6438275382588823897}}
+// gdbr-check:$3 = struct_style_enum_legacy::Regular::Case3{a: 0, b: 6438275382588823897}
+
+// gdb-command:print univariant
+// gdbg-check:$4 = {{a = -1}}
+// gdbr-check:$4 = struct_style_enum_legacy::Univariant::TheOnlyCase{a: -1}
+
+
+// === LLDB TESTS ==================================================================================
+
+// lldb-command:run
+
+// lldb-command:print case1
+// lldbg-check:[...]$0 = Case1 { a: 0, b: 31868, c: 31868, d: 31868, e: 31868 }
+// lldbr-check:(struct_style_enum_legacy::Regular::Case1) case1 = { a = 0 b = 31868 c = 31868 d = 31868 e = 31868 }
+
+// lldb-command:print case2
+// lldbg-check:[...]$1 = Case2 { a: 0, b: 286331153, c: 286331153 }
+// lldbr-check:(struct_style_enum_legacy::Regular::Case2) case2 = Case2 { struct_style_enum_legacy::Regular::Case1: 0, struct_style_enum_legacy::Regular::Case2: 286331153, struct_style_enum_legacy::Regular::Case3: 286331153 }
+
+// lldb-command:print case3
+// lldbg-check:[...]$2 = Case3 { a: 0, b: 6438275382588823897 }
+// lldbr-check:(struct_style_enum_legacy::Regular::Case3) case3 = Case3 { struct_style_enum_legacy::Regular::Case1: 0, struct_style_enum_legacy::Regular::Case2: 6438275382588823897 }
+
+// lldb-command:print univariant
+// lldbg-check:[...]$3 = TheOnlyCase { a: -1 }
+// lldbr-check:(struct_style_enum_legacy::Univariant) univariant = Univariant { struct_style_enum_legacy::TheOnlyCase: TheOnlyCase { a: -1 } }
+
+#![allow(unused_variables)]
+#![feature(omit_gdb_pretty_printer_section)]
+#![omit_gdb_pretty_printer_section]
+
+use self::Regular::{Case1, Case2, Case3};
+use self::Univariant::TheOnlyCase;
+
+// The first element is to ensure proper alignment, irrespective of the machines word size. Since
+// the size of the discriminant value is machine dependent, this has be taken into account when
+// datatype layout should be predictable as in this case.
+enum Regular {
+    Case1 { a: u64, b: u16, c: u16, d: u16, e: u16},
+    Case2 { a: u64, b: u32, c: u32},
+    Case3 { a: u64, b: u64 }
+}
+
+enum Univariant {
+    TheOnlyCase { a: i64 }
+}
+
+fn main() {
+
+    // In order to avoid endianness trouble all of the following test values consist of a single
+    // repeated byte. This way each interpretation of the union should look the same, no matter if
+    // this is a big or little endian machine.
+
+    // 0b0111110001111100011111000111110001111100011111000111110001111100 = 8970181431921507452
+    // 0b01111100011111000111110001111100 = 2088533116
+    // 0b0111110001111100 = 31868
+    // 0b01111100 = 124
+    let case1 = Case1 { a: 0, b: 31868, c: 31868, d: 31868, e: 31868 };
+
+    // 0b0001000100010001000100010001000100010001000100010001000100010001 = 1229782938247303441
+    // 0b00010001000100010001000100010001 = 286331153
+    // 0b0001000100010001 = 4369
+    // 0b00010001 = 17
+    let case2 = Case2 { a: 0, b: 286331153, c: 286331153 };
+
+    // 0b0101100101011001010110010101100101011001010110010101100101011001 = 6438275382588823897
+    // 0b01011001010110010101100101011001 = 1499027801
+    // 0b0101100101011001 = 22873
+    // 0b01011001 = 89
+    let case3 = Case3 { a: 0, b: 6438275382588823897 };
+
+    let univariant = TheOnlyCase { a: -1 };
+
+    zzz(); // #break
+}
+
+fn zzz() {()}