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Fix for issue #3241

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Signed-off-by: Vladislav Shchapov <vladislav@shchapov.ru>
This commit is contained in:
Vladislav Shchapov
2022-12-23 17:47:54 +05:00
committed by Victor Zverovich
parent bde1a6070d
commit e004f1d699
2 changed files with 5 additions and 1 deletions
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2
include/fmt/core.h
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@ -863,7 +863,7 @@ template <typename Char, typename T, typename U,
FMT_CONSTEXPR auto copy_str(T* begin, T* end, U* out) -> U* { FMT_CONSTEXPR auto copy_str(T* begin, T* end, U* out) -> U* {
if (is_constant_evaluated()) return copy_str<Char, T*, U*>(begin, end, out); if (is_constant_evaluated()) return copy_str<Char, T*, U*>(begin, end, out);
auto size = to_unsigned(end - begin); auto size = to_unsigned(end - begin);
memcpy(out, begin, size * sizeof(U)); if (size > 0) memcpy(out, begin, size * sizeof(U));
return out + size; return out + size;
} }

4
test/format-test.cc
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@ -2047,6 +2047,10 @@ TEST(format_test, to_string) {
#if FMT_USE_FLOAT128 #if FMT_USE_FLOAT128
EXPECT_EQ(fmt::to_string(__float128(0.5)), "0.5"); EXPECT_EQ(fmt::to_string(__float128(0.5)), "0.5");
#endif #endif
#if defined(FMT_USE_STRING_VIEW) && FMT_CPLUSPLUS >= 201703L
EXPECT_EQ(fmt::to_string(std::string_view()), "");
#endif
} }
TEST(format_test, output_iterators) { TEST(format_test, output_iterators) {