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-rw-r--r--tapsets.cxx3
1 files changed, 2 insertions, 1 deletions
diff --git a/tapsets.cxx b/tapsets.cxx
index 7b0d2b78..d9a75340 100644
--- a/tapsets.cxx
+++ b/tapsets.cxx
@@ -1710,7 +1710,8 @@ dwarf_query::blacklisted_p(string const & funcname,
// properly generalized, perhaps via a table populated from script
// files. A "noprobe kernel.function("...")" construct might do
// the trick.
- string filename_s = filename ? filename : ""; // is passed as const char*
+ if (filename == 0) filename = ""; // possibly 0
+ string filename_s = filename; // is passed as const char*
if (funcname == "do_IRQ" ||
filename_s == "kernel/kprobes.c" ||
0 == fnmatch ("arch/*/kernel/kprobes.c", filename, 0) ||