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-rw-r--r--gmon/tst-gmon.c50
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diff --git a/gmon/tst-gmon.c b/gmon/tst-gmon.c
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+/* Test program for profiling information collection (_mcount/gprof).
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* This program does not use the test harness because we want tight
+ control over the call graph. */
+
+__attribute__ ((noinline, noclone, weak)) void
+f1 (void)
+{
+}
+
+__attribute__ ((noinline, noclone, weak)) void
+f2 (void)
+{
+ f1 ();
+ /* Prevent tail call. */
+ asm volatile ("");
+}
+
+__attribute__ ((noinline, noclone, weak)) void
+f3 (int count)
+{
+ for (int i = 0; i < count; ++i)
+ {
+ f1 ();
+ f2 ();
+ }
+}
+
+int
+main (void)
+{
+ f3 (1000);
+ return 0;
+}