Let DRD print a warning at startup that support for Darwin is still considered experimental, and filter out this warning from the regression tests.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@10554 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/drd/drd_main.c b/drd/drd_main.c
index 3fde8d2..b3b3708 100644
--- a/drd/drd_main.c
+++ b/drd/drd_main.c
@@ -544,8 +544,12 @@
 
 static void DRD_(post_clo_init)(void)
 {
-#if !defined(VGO_linux) && !defined(VGO_darwin)
-   VG_(printf)("\nWARNING: DRD has only been tested on Linux and on Darwin.\n\n");
+#if defined(VGO_linux)
+   /* fine */
+#elif defined(VGO_darwin)
+   VG_(printf)("\nWARNING: DRD support for Darwin is still considered as experimental.\n\n");
+#else
+   VG_(printf)("\nWARNING: DRD has not yet been tested on this operating system.\n\n");
 #  endif
 
    if (DRD_(s_var_info))
diff --git a/drd/tests/filter_stderr b/drd/tests/filter_stderr
index 7db91d9..09652c9 100755
--- a/drd/tests/filter_stderr
+++ b/drd/tests/filter_stderr
@@ -33,6 +33,9 @@
 # (consists of two lines) and also the empty line above it.
 awk 'BEGIN{begin=1} {if ($0 == "More than 100 errors detected.  Subsequent errors") { getline; getline; } else { if (begin) begin = 0; else print last_line; }; last_line = $0; } END { if (! begin) print last_line; }' |
 
+# Remove the message about experimental support for Darwin.
+awk 'BEGIN{begin=1} { if ($0 == "WARNING: DRD support for Darwin is still considered as experimental.") { getline; getline; } else { if (begin) begin = 0; else print last_line; }; last_line = $0; } END { if (! begin) print last_line; }' |
+
 # Anonymise addresses
 $dir/../../tests/filter_addresses