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--- lib/stdlib/src/calendar.erl.orig 2025-04-16 13:06:44 UTC
+++ lib/stdlib/src/calendar.erl
@@ -297,11 +297,19 @@ local_time_to_universal_time(DateTime, IsDst) ->
DateTime1 :: datetime1970(),
DateTime :: datetime1970().
local_time_to_universal_time_dst(DateTime) ->
- UtDst = erlang:localtime_to_universaltime(DateTime, true),
- Ut = erlang:localtime_to_universaltime(DateTime, false),
%% Reverse check the universal times
- LtDst = erlang:universaltime_to_localtime(UtDst),
- Lt = erlang:universaltime_to_localtime(Ut),
+ {UtDst, LtDst} =
+ try
+ UtDst0 = erlang:localtime_to_universaltime(DateTime, true),
+ {UtDst0, erlang:universaltime_to_localtime(UtDst0)}
+ catch error:badarg -> {error, error}
+ end,
+ {Ut, Lt} =
+ try
+ Ut0 = erlang:localtime_to_universaltime(DateTime, false),
+ {Ut0, erlang:universaltime_to_localtime(Ut0)}
+ catch error:badarg -> {error, error}
+ end,
%% Return the valid universal times
case {LtDst,Lt} of
{DateTime,DateTime} when UtDst =/= Ut ->
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