commit ef4913316ffc896b5c17882b58730f2129a8fe38
author Jeff Genovy <29107334+jefgen@users.noreply.github.com> Fri Sep 04 12:15:20 2020 -0700
committer Jeff Genovy <29107334+jefgen@users.noreply.github.com> Tue Sep 08 13:52:53 2020 -0700
tree 0e6d55e6ea2f0f440ada69db39c38b1dacc84cd5
parent 8e04bf016d266dd2e7a99b15d0eb7f22cb58ce8c

ICU-21271 Fix valgrind failure in dtptngen.cpp

icu4c/source/i18n/dtptngen.cpp

diff --git a/icu4c/source/i18n/dtptngen.cpp b/icu4c/source/i18n/dtptngen.cpp
index 02be4f0..32d3fc4 100644
--- a/icu4c/source/i18n/dtptngen.cpp
+++ b/icu4c/source/i18n/dtptngen.cpp
@@ -893,7 +893,7 @@
             err = localStatus;
             return;
         }
-        if (calendarTypeLen < ULOC_KEYWORDS_CAPACITY) {
+        if (calendarTypeLen > 0 && calendarTypeLen < ULOC_KEYWORDS_CAPACITY) {
             destination.clear().append(calendarType, -1, err);
             if (U_FAILURE(err)) { return; }
         }