test: fix libc++ crash in Log.GarbleRecovery

Signed-off-by: Casey Bodley <cbodley@redhat.com>

diff --git a/src/log/test.cc b/src/log/test.cc
index 3b2e2c9f9ad08689f4f84b0322a2cbe4d2ba8e85..76f7f78e4b7604f9089bbf9157c40c0fe779ea37 100644 (file)
--- a/src/log/test.cc
+++ b/src/log/test.cc
@@ -355,7 +355,7 @@ TEST(Log, GarbleRecovery)
 
   std::string long_message(1000,'c');
   ldout(g_ceph_context, 0) << long_message << dendl;
-  ldout(g_ceph_context, 0) << "Prologue" << (char*)nullptr << long_message << dendl;
+  ldout(g_ceph_context, 0) << "Prologue" << (std::streambuf*)nullptr << long_message << dendl;
   ldout(g_ceph_context, 0) << "Epitaph" << long_message << dendl;
 
   g_ceph_context->_log = saved;