gdb: Avoid warning for the jump command inside an inline function.

When stopped inside an inline function, trying to jump to a different line
of the same function currently results in a warning about jumping to another
function.  Fix this by taking inline functions into account.

Before:
  Breakpoint 1, function_inline (x=510) at jump-inline.cpp:22
  22        a = a + x;             /* inline-funct */
  (gdb) j 21
  Line 21 is not in `function_inline(int)'.  Jump anyway? (y or n)

After:
  Breakpoint 2, function_inline (x=510) at jump-inline.cpp:22
  22        a = a + x;            /* inline-funct */
  (gdb) j 21
  Continuing at 0x400679.

  Breakpoint 1, function_inline (x=510) at jump-inline.cpp:21
  21        a += 1020 + a;                /* increment-funct */

This was regression-tested on X86-64 Linux.

Co-Authored-by: Cristian Sandu <cristian.sandu@intel.com>
Approved-By: Andrew Burgess <aburgess@redhat.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/jump-inline.c b/gdb/testsuite/gdb.base/jump-inline.c
new file mode 100644
index 00000000000..17447c2d557
--- /dev/null
+++ b/gdb/testsuite/gdb.base/jump-inline.c
@@ -0,0 +1,30 @@
+/* Copyright 2021-2023 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+__attribute__((always_inline))
+static void inline
+function_inline (int x)
+{
+  int a = x;
+  a += 1020 + a;		/* increment-funct. */
+  a = a + x;			/* inline-funct. */
+}
+
+int
+main ()
+{
+  function_inline (510);
+  return 0;			/* out-of-func. */
+}