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Fix formatting std::tm with null tm_zone (#4790)

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This commit is contained in:
Jiami Lin
2026-06-02 09:16:49 +08:00
committed by GitHub
parent f53c0408a3
commit a90ad5d6fd
2 changed files with 4 additions and 0 deletions
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test/chrono-test.cc
+3
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@@ -358,6 +358,9 @@ TEST(chrono_test, tm) {
char tz[] = "EET";
if (fmt::detail::set_tm_zone(time, tz)) {
EXPECT_EQ(fmt::format(fmt::runtime("{:%Z}"), time), "EET");
fmt::detail::set_tm_zone(time, nullptr);
EXPECT_THROW_MSG((void)fmt::format(fmt::runtime("{:%Z}"), time),
fmt::format_error, "no timezone");
} else {
EXPECT_THROW_MSG((void)fmt::format(fmt::runtime("{:%Z}"), time),
fmt::format_error, "no timezone");