Fix: update debug message about weak-hidden symbols

[lttng-ust.git] / liblttng-ust / tracepoint.c

diff --git a/liblttng-ust/tracepoint.c b/liblttng-ust/tracepoint.c
index a594d73ddd7bc6a3c893acd3d645635d23bc6c73..db5886009de5f620f24880e884b1345618470a2d 100644 (file)
--- a/liblttng-ust/tracepoint.c
+++ b/liblttng-ust/tracepoint.c
@@ -44,7 +44,11 @@
 #include "error.h"
 
 /* Test compiler support for weak symbols with hidden visibility. */
-char __tracepoint_test_symbol[9] __attribute__((weak, visibility("hidden")));
+int __tracepoint_test_symbol1 __attribute__((weak, visibility("hidden")));
+void *__tracepoint_test_symbol2 __attribute__((weak, visibility("hidden")));
+struct {
+       char a[24];
+} __tracepoint_test_symbol3 __attribute__((weak, visibility("hidden")));
 
 /* Set to 1 to enable tracepoint debug output */
 static const int tracepoint_debug;
@@ -814,10 +818,18 @@ int tracepoint_unregister_lib(struct lttng_ust_tracepoint * const *tracepoints_s
  */
 static void check_weak_hidden(void)
 {
-       DBG("Your compiler support for weak symbols with hidden visibility is %s",
-               __tracepoint_test_symbol == lttng_ust_tp_check_weak_hidden() ?
-                       "OK" :
-                       "BROKEN. Please upgrade or fix your compiler to use LTTng-UST tracepoints.");
+       DBG("Your compiler treats weak symbols with hidden visibility for integer objects as %s between compile units part of the same module.",
+               &__tracepoint_test_symbol1 == lttng_ust_tp_check_weak_hidden1() ?
+                       "SAME address" :
+                       "DIFFERENT addresses");
+       DBG("Your compiler treats weak symbols with hidden visibility for pointer objects as %s between compile units part of the same module.",
+               &__tracepoint_test_symbol2 == lttng_ust_tp_check_weak_hidden2() ?
+                       "SAME address" :
+                       "DIFFERENT addresses");
+       DBG("Your compiler treats weak symbols with hidden visibility for 24-byte structure objects as %s between compile units part of the same module.",
+               &__tracepoint_test_symbol3 == lttng_ust_tp_check_weak_hidden3() ?
+                       "SAME address" :
+                       "DIFFERENT addresses");
 }
 
 void init_tracepoint(void)