diff options
-rw-r--r-- | tool/lib/minitest/unit.rb | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tool/lib/minitest/unit.rb b/tool/lib/minitest/unit.rb index d922a5fc41..a384ddc17c 100644 --- a/tool/lib/minitest/unit.rb +++ b/tool/lib/minitest/unit.rb @@ -984,6 +984,9 @@ module MiniTest def location e # :nodoc: last_before_assertion = "" + + return '<empty>' unless e.backtrace # SystemStackError can return nil. + e.backtrace.reverse_each do |s| break if s =~ /in .(assert|refute|flunk|pass|fail|raise|must|wont)/ last_before_assertion = s |