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-rw-r--r--lib/dialyzer/src/dialyzer_plt.erl1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/dialyzer/src/dialyzer_plt.erl b/lib/dialyzer/src/dialyzer_plt.erl
index 47994fc35b..0fd99bbc04 100644
--- a/lib/dialyzer/src/dialyzer_plt.erl
+++ b/lib/dialyzer/src/dialyzer_plt.erl
@@ -772,6 +772,7 @@ tab_is_disj(K1, T1, T2) ->
end.
merge_tables(T1, T2) ->
+ ets:safe_fixtable(T1, true),
tab_merge(ets:first(T1), T1, T2).
tab_merge('$end_of_table', T1, T2) ->