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-rw-r--r--lib/gitlab/ci/yaml_processor.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/gitlab/ci/yaml_processor.rb b/lib/gitlab/ci/yaml_processor.rb
index a5693dc4f81..a0bbf3c23a2 100644
--- a/lib/gitlab/ci/yaml_processor.rb
+++ b/lib/gitlab/ci/yaml_processor.rb
@@ -144,7 +144,9 @@ module Gitlab
job[:dependencies].each do |dependency|
raise ValidationError, "#{name} job: undefined dependency: #{dependency}" unless @jobs[dependency.to_sym]
- unless @stages.index(@jobs[dependency.to_sym][:stage]) < stage_index
+ dependency_stage_index = @stages.index(@jobs[dependency.to_sym][:stage])
+
+ unless dependency_stage_index.present? && dependency_stage_index < stage_index
raise ValidationError, "#{name} job: dependency #{dependency} is not defined in prior stages"
end
end