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backtrace can be nil.

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Surprisingly, on SystemStackError#backtrace can return nil.
This commit is contained in:
Koichi Sasada 2019-07-31 15:01:19 +09:00
parent efac0a2384
commit cac44def0b
1 changed files with 3 additions and 0 deletions
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3
tool/lib/minitest/unit.rb
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@ -984,6 +984,9 @@ module MiniTest
def location e # :nodoc: def location e # :nodoc:
last_before_assertion = "" last_before_assertion = ""
return '<empty>' unless e.backtrace # SystemStackError can return nil.
e.backtrace.reverse_each do |s| e.backtrace.reverse_each do |s|
break if s =~ /in .(assert|refute|flunk|pass|fail|raise|must|wont)/ break if s =~ /in .(assert|refute|flunk|pass|fail|raise|must|wont)/
last_before_assertion = s last_before_assertion = s