lean2/tests/lean/run/blast_congr_bug.lean

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constant P : Type₁
constant P_sub : subsingleton P
attribute P_sub [instance]
constant q : P → Prop
section
set_option blast.simp true
set_option blast.cc false
example (h₁ h₂ : P) : q h₁ = q h₂ :=
by blast
end
section
set_option blast.simp false
set_option blast.cc true
example (h₁ h₂ : P) : q h₁ = q h₂ :=
by blast
end