augment previous commit

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6708

diff --git a/coregrind/m_debuginfo/debuginfo.c b/coregrind/m_debuginfo/debuginfo.c
index e7fad3d3c39682dc26f288e4b92f8a3fb62f0acc..ca830040f7e52e5c10d73f2e47ba09c6daea1d37 100644 (file)
--- a/coregrind/m_debuginfo/debuginfo.c
+++ b/coregrind/m_debuginfo/debuginfo.c
@@ -741,7 +741,10 @@ Bool VG_(get_filename_linenum) ( Addr a,
 
    search_all_loctabs ( a, &si, &locno );
    if (si == NULL) {
-      if (dirname_available) *dirname_available = False;
+      if (dirname_available) {
+         *dirname_available = False;
+         *dirname = 0;
+      }
       return False;
    }