--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/plugin/diagnostic-test-inlining-4.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,56 @@
+/* { dg-do compile } */
+/* { dg-options "-Wno-attributes -fdiagnostics-show-caret" } */
+
+extern void __emit_warning (const char *message);
+
+__attribute__((always_inline))
+static void depth_0 (void)
+{
+  __emit_warning ("message");
+}
+
+__attribute__((always_inline))
+static void depth_1 (void)
+{
+  depth_0 ();
+}
+
+__attribute__((always_inline))
+static void depth_2 (void)
+{
+  depth_1 ();
+}
+
+__attribute__((always_inline))
+static void depth_3 (void)
+{
+  depth_2 ();
+}
+
+__attribute__((always_inline))
+static void depth_4 (void)
+{
+  depth_3 ();
+}
+
+int main()
+{
+  depth_4 ();
+  return 0;
+}
+
+/* Verify that the diagnostic subsytem describes the chain of inlining
+   when reporting the warning, for an example showing many levels of
+   inlining.  */
+
+/* { dg-regexp "In function 'depth_0'," "" } */
+/* { dg-regexp "    inlined from 'depth_1' at .+/diagnostic-test-inlining-4.c:15:3," "" } */
+/* { dg-regexp "    inlined from 'depth_2' at .+/diagnostic-test-inlining-4.c:21:3," "" } */
+/* { dg-regexp "    inlined from 'depth_3' at .+/diagnostic-test-inlining-4.c:27:3," "" } */
+/* { dg-regexp "    inlined from 'depth_4' at .+/diagnostic-test-inlining-4.c:33:3," "" } */
+/* { dg-regexp "    inlined from 'main' at .+/diagnostic-test-inlining-4.c:38:3:" "" } */
+/* { dg-warning "3: message" "" { target *-*-* } 9 } */
+/* { dg-begin-multiline-output "" }
+   __emit_warning ("message");
+   ^~~~~~~~~~~~~~~~~~~~~~~~~~
+   { dg-end-multiline-output "" } */