1 files changed, 163 insertions, 0 deletions
diff --git a/src/test/debuginfo/option-like-enum.rs b/src/test/debuginfo/option-like-enum.rs
new file mode 100644
index 000000000..04d08b9e6
--- /dev/null
+++ b/src/test/debuginfo/option-like-enum.rs
@@ -0,0 +1,163 @@
+// ignore-test // Test temporarily ignored due to debuginfo tests being disabled, see PR 47155
+
+// min-lldb-version: 310
+
+// compile-flags:-g
+
+// === GDB TESTS ===================================================================================
+
+// gdb-command:run
+
+// gdb-command:print some
+// gdbg-check:$1 = {RUST$ENCODED$ENUM$0$None = {__0 = 0x12345678}}
+// gdbr-check:$1 = core::option::Option<&u32>::Some(0x12345678)
+
+// gdb-command:print none
+// gdbg-check:$2 = {RUST$ENCODED$ENUM$0$None = {__0 = 0x0}}
+// gdbr-check:$2 = core::option::Option<&u32>::None
+
+// gdb-command:print full
+// gdbg-check:$3 = {RUST$ENCODED$ENUM$1$Empty = {__0 = 454545, __1 = 0x87654321, __2 = 9988}}
+// gdbr-check:$3 = option_like_enum::MoreFields::Full(454545, 0x87654321, 9988)
+
+// gdbg-command:print empty_gdb->discr
+// gdbr-command:print empty_gdb.discr
+// gdb-check:$4 = (isize *) 0x0
+
+// gdb-command:print droid
+// gdbg-check:$5 = {RUST$ENCODED$ENUM$2$Void = {id = 675675, range = 10000001, internals = 0x43218765}}
+// gdbr-check:$5 = option_like_enum::NamedFields::Droid{id: 675675, range: 10000001, internals: 0x43218765}
+
+// gdbg-command:print void_droid_gdb->internals
+// gdbr-command:print void_droid_gdb.internals
+// gdb-check:$6 = (isize *) 0x0
+
+// gdb-command:print nested_non_zero_yep
+// gdbg-check:$7 = {RUST$ENCODED$ENUM$1$2$Nope = {__0 = 10.5, __1 = {a = 10, b = 20, c = [...]}}}
+// gdbr-check:$7 = option_like_enum::NestedNonZero::Yep(10.5, option_like_enum::NestedNonZeroField {a: 10, b: 20, c: 0x[...] "x[...]"})
+
+// gdb-command:print nested_non_zero_nope
+// gdbg-check:$8 = {RUST$ENCODED$ENUM$1$2$Nope = {__0 = [...], __1 = {a = [...], b = [...], c = 0x0}}}
+// gdbr-check:$8 = option_like_enum::NestedNonZero::Nope
+
+// gdb-command:continue
+
+
+// === LLDB TESTS ==================================================================================
+
+// lldb-command:run
+
+// lldb-command:print some
+// lldb-check:[...]$0 = Some(&0x12345678)
+
+// lldb-command:print none
+// lldb-check:[...]$1 = None
+
+// lldb-command:print full
+// lldb-check:[...]$2 = Full(454545, &0x87654321, 9988)
+
+// lldb-command:print empty
+// lldb-check:[...]$3 = Empty
+
+// lldb-command:print droid
+// lldb-check:[...]$4 = Droid { id: 675675, range: 10000001, internals: &0x43218765 }
+
+// lldb-command:print void_droid
+// lldb-check:[...]$5 = Void
+
+// lldb-command:print some_str
+// lldb-check:[...]$6 = Some("abc")
+
+// lldb-command:print none_str
+// lldb-check:[...]$7 = None
+
+// lldb-command:print nested_non_zero_yep
+// lldb-check:[...]$8 = Yep(10.5, NestedNonZeroField { a: 10, b: 20, c: &[...] })
+
+// lldb-command:print nested_non_zero_nope
+// lldb-check:[...]$9 = Nope
+
+
+#![feature(omit_gdb_pretty_printer_section)]
+#![omit_gdb_pretty_printer_section]
+
+// If a struct has exactly two variants, one of them is empty, and the other one
+// contains a non-nullable pointer, then this value is used as the discriminator.
+// The test cases in this file make sure that something readable is generated for
+// this kind of types.
+// If the non-empty variant contains a single non-nullable pointer than the whole
+// item is represented as just a pointer and not wrapped in a struct.
+// Unfortunately (for these test cases) the content of the non-discriminant fields
+// in the null-case is not defined. So we just read the discriminator field in
+// this case (by casting the value to a memory-equivalent struct).
+
+enum MoreFields<'a> {
+    Full(u32, &'a isize, i16),
+    Empty
+}
+
+struct MoreFieldsRepr<'a> {
+    a: u32,
+    discr: &'a isize,
+    b: i16
+}
+
+enum NamedFields<'a> {
+    Droid { id: i32, range: i64, internals: &'a isize },
+    Void
+}
+
+struct NamedFieldsRepr<'a> {
+    id: i32,
+    range: i64,
+    internals: &'a isize
+}
+
+struct NestedNonZeroField<'a> {
+    a: u16,
+    b: u32,
+    c: &'a char,
+}
+
+enum NestedNonZero<'a> {
+    Yep(f64, NestedNonZeroField<'a>),
+    Nope
+}
+
+fn main() {
+
+    let some_str: Option<&'static str> = Some("abc");
+    let none_str: Option<&'static str> = None;
+
+    let some: Option<&u32> = Some(unsafe { std::mem::transmute(0x12345678_usize) });
+    let none: Option<&u32> = None;
+
+    let full = MoreFields::Full(454545, unsafe { std::mem::transmute(0x87654321_usize) }, 9988);
+
+    let empty = MoreFields::Empty;
+    let empty_gdb: &MoreFieldsRepr = unsafe { std::mem::transmute(&MoreFields::Empty) };
+
+    let droid = NamedFields::Droid {
+        id: 675675,
+        range: 10000001,
+        internals: unsafe { std::mem::transmute(0x43218765_usize) }
+    };
+
+    let void_droid = NamedFields::Void;
+    let void_droid_gdb: &NamedFieldsRepr = unsafe { std::mem::transmute(&NamedFields::Void) };
+
+    let x = 'x';
+    let nested_non_zero_yep = NestedNonZero::Yep(
+        10.5,
+        NestedNonZeroField {
+            a: 10,
+            b: 20,
+            c: &x
+        });
+
+    let nested_non_zero_nope = NestedNonZero::Nope;
+
+    zzz(); // #break
+}
+
+fn zzz() {()}