make prereq fail with 1 if host command not installed

as prereq must return 0 or 1. Any other return value aborts the regtests.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14391

diff --git a/none/tests/res_search.vgtest b/none/tests/res_search.vgtest
index 2253830ae1c4cfafbf40179ae2b1d620f60cf5c5..745a5ff4cc8976c0b272f1cc90d44d86e51138ed 100644 (file)
--- a/none/tests/res_search.vgtest
+++ b/none/tests/res_search.vgtest
@@ -1,4 +1,4 @@
-prereq: host www.yahoo.com > /dev/null
+prereq: which host >/dev/null 2>/dev/null && host www.yahoo.com > /dev/null
 prog: res_search
 args: www.yahoo.com
 vgopts: -q