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-rw-r--r--lib/tracer.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/tracer.rb b/lib/tracer.rb
index 76a8723ff..9d197a638 100644
--- a/lib/tracer.rb
+++ b/lib/tracer.rb
@@ -125,7 +125,7 @@ class Tracer
line,
klass || '',
EVENT_SYMBOL[event],
- get_line(file, line))
+ line == 0 ? "?\n" : get_line(file, line))
# Thread.critical = saved_crit
end