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-rw-r--r--src/Util/Sum.v8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/Util/Sum.v b/src/Util/Sum.v
index d6fa26c2c..fe7fe662b 100644
--- a/src/Util/Sum.v
+++ b/src/Util/Sum.v
@@ -86,13 +86,13 @@ Ltac induction_path_sum H :=
end.
Ltac inversion_sum_step :=
match goal with
- | [ H : _ = inl _ |- _ ]
+ | [ H : inl _ = inl _ |- _ ]
=> induction_path_sum H
- | [ H : inl _ = _ |- _ ]
+ | [ H : inl _ = inr _ |- _ ]
=> induction_path_sum H
- | [ H : _ = inr _ |- _ ]
+ | [ H : inr _ = inl _ |- _ ]
=> induction_path_sum H
- | [ H : inr _ = _ |- _ ]
+ | [ H : inr _ = inr _ |- _ ]
=> induction_path_sum H
end.
Ltac inversion_sum := repeat inversion_sum_step.