Auto merge of rust-lang#53497 - fukatani:test-debuginfo-function-call…

…, r=tromey

Test with gdb8.2 and add debuginfo printing function call test

As far as I can see, `print function()` is not tested. It is important feature for debugging.

src/test/debuginfo/function-call.rs

@@ -0,0 +1,52 @@
+// Copyright 2018 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.
+
+// This test does not passed with gdb < 8.0. See #53497.
+// min-gdb-version 8.0
+
+// compile-flags:-g
+
+// === GDB TESTS ===================================================================================
+
+// gdb-command:run
+
+// gdb-command:print fun(45, true)
+// gdb-check:$1 = true
+// gdb-command:print fun(444, false)
+// gdb-check:$2 = false
+
+// gdb-command:print r.get_x()
+// gdb-check:$3 = 4
+
+#![allow(dead_code, unused_variables)]
+
+struct RegularStruct {
+    x: i32
+}
+
+impl RegularStruct {
+    fn get_x(&self) -> i32 {
+        self.x
+    }
+}
+
+fn main() {
+    let _ = fun(4, true);
+    let r = RegularStruct{x: 4};
+    let _ = r.get_x();
+
+    zzz(); // #break
+}
+
+fn fun(x: isize, y: bool) -> bool {
+    y
+}
+
+fn zzz() { () }