Fix PR78333 testcase for non-glibc systems.

2016-11-17  Christophe Lyon  <christophe.lyon@linaro.org>

gcc/testsuite/

	* gcc.dg/pr78333.c: Add empty implementations of
	__cyg_profile_func_enter() and __cyg_profile_func_exit() to avoid
	problems on non-glibc systems.

From-SVN: r242553

gcc/testsuite/ChangeLog

+2016-11-17  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	* gcc.dg/pr78333.c: Add empty implementations of
+	__cyg_profile_func_enter() and __cyg_profile_func_exit() to avoid
+	problems on non-glibc systems.
+
 2016-11-17  David Malcolm  <dmalcolm@redhat.com>
 
 	* gcc.dg/plugin/diagnostic-test-string-literals-1.c

gcc/testsuite/gcc.dg/pr78333.c

 /* { dg-do link } */
 /* { dg-options "-finstrument-functions" } */
 
+/* Add empty implementations of __cyg_profile_func_enter() and
+   __cyg_profile_func_exit() to avoid problems on non-glibc
+   systems.  */
+void __attribute__((no_instrument_function))
+__cyg_profile_func_enter(void *this_fn, void *call_site)
+{
+}
+
+void __attribute__((no_instrument_function))
+__cyg_profile_func_exit(void *this_fn, void *call_site)
+{
+}
+
 extern inline __attribute__((gnu_inline, always_inline)) int foo () { }
 int main()
 {