liblttng-ust/tracepoint-weak-test.c

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  */
   6
   7 /* Test compiler support for weak symbols with hidden visibility. */
   8 int __tracepoint_test_symbol1 __attribute__((weak, visibility("hidden")));
   9 void *__tracepoint_test_symbol2 __attribute__((weak, visibility("hidden")));
  10 struct {
  11         char a[24];
  12 } __tracepoint_test_symbol3 __attribute__((weak, visibility("hidden")));
  13
  14 __attribute__((visibility("hidden")))
  15 void *lttng_ust_tp_check_weak_hidden1(void)
  16 {
  17         return &__tracepoint_test_symbol1;
  18 }
  19
  20 __attribute__((visibility("hidden")))
  21 void *lttng_ust_tp_check_weak_hidden2(void)
  22 {
  23         return &__tracepoint_test_symbol2;
  24 }
  25
  26 __attribute__((visibility("hidden")))
  27 void *lttng_ust_tp_check_weak_hidden3(void)
  28 {
  29         return &__tracepoint_test_symbol3;
  30 }