[BZ #16195] Fix build warnings from systemtap probes in non-systemtap configurations

Joseph pointed out in the bug report (and in an earlier thread) that
systemtap probes cause build time warnings like the following:

    ../sysdeps/ieee754/dbl-64/e_atan2.c:602:4: warning: the address of
    'p' will always evaluate as 'true' [-Waddress]

due to the fact that we're now passing non-weak variables to
LIBC_PROBE in the libm probes.  This happens only on configurations
that do not enable systemtap.  The macro definition of LIBC_PROBE in
this case only acts as a sanity checker to ensure that the number
parameters passed to LIBC_PROBE is equal to the argument count
parameter passed before it.  This can be done in a much simpler manner
by just adding a macro definition for each number of arguments.  I am
assuming here that we don't really want to bother with supporting
LIBC_PROBE with an indeterminate number of arguments and if there is a
need for a probe to have more data than what is currently supported (4
arguments), one could simply add an additional macro here.

1 files changed, 2 insertions, 2 deletions

diff --git a/NEWS b/NEWS
index e85b4c6e30..c431d72539 100644
--- a/NEWS
+++ b/NEWS
@@ -19,8 +19,8 @@ Version 2.19
   15892, 15893, 15895, 15897, 15905, 15909, 15917, 15919, 15921, 15923,
   15939, 15948, 15963, 15966, 15985, 15988, 15997, 16032, 16034, 16036,
   16037, 16041, 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112,
-  16143, 16144, 16146, 16150, 16151, 16153, 16167, 16172, 16214, 16245,
-  16271.
+  16143, 16144, 16146, 16150, 16151, 16153, 16167, 16172, 16195, 16214,
+  16245, 16271.
 
 * The public headers no longer use __unused nor __block.  This change is to
   support compiling programs that are derived from BSD sources and use