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-rw-r--r--src/jlib.erl6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/jlib.erl b/src/jlib.erl
index 9198d23dc..9cafe3215 100644
--- a/src/jlib.erl
+++ b/src/jlib.erl
@@ -717,7 +717,11 @@ now_to_utc_string({MegaSecs, Secs, MicroSecs}, Precision) ->
{{Year, Month, Day}, {Hour, Minute, Second}} =
calendar:now_to_universal_time({MegaSecs, Secs,
MicroSecs}),
- FracOfSec = round(MicroSecs / math:pow(10, 6 - Precision)),
+ Max = math:pow(10, Precision),
+ FracOfSec = case round(MicroSecs / math:pow(10, 6 - Precision)) of
+ Max -> Max - 1; % don't overflow io_lib:format
+ X -> X
+ end,
list_to_binary(io_lib:format("~4..0B-~2..0B-~2..0BT~2..0B:~2..0B:~2..0B.~*."
".0BZ",
[Year, Month, Day, Hour, Minute, Second,