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-rw-r--r--lib/tsan/dd/dd_rtl.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/tsan/dd/dd_rtl.cc b/lib/tsan/dd/dd_rtl.cc
index 474684397..7f3c75e94 100644
--- a/lib/tsan/dd/dd_rtl.cc
+++ b/lib/tsan/dd/dd_rtl.cc
@@ -76,7 +76,7 @@ void InitializeFlags(Flags *f, const char *env) {
f->allow_addr2line = true;
// Override from command line.
- ParseFlag(env, &f->second_deadlock_stack, "second_deadlock_stack");
+ ParseFlag(env, &f->second_deadlock_stack, "second_deadlock_stack", "");
ParseCommonFlagsFromString(f, env);
// Copy back to common flags.