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Fix handling of iterators in locale-specific formatting (#1782)

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This commit is contained in:
Victor Zverovich 2020-07-30 07:03:11 -07:00
parent b9d749095e
commit 33efc3c94f
2 changed files with 17 additions and 4 deletions
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9
include/fmt/format.h
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@ -745,9 +745,9 @@ FMT_CONSTEXPR bool is_supported_floating_point(T) {
// Smallest of uint32_t, uint64_t, uint128_t that is large enough to
// represent all values of T.
template <typename T>
using uint32_or_64_or_128_t = conditional_t<
num_bits<T>() <= 32, uint32_t,
conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>>;
using uint32_or_64_or_128_t =
conditional_t<num_bits<T>() <= 32, uint32_t,
conditional_t<num_bits<T>() <= 64, uint64_t, uint128_t>>;
// Static data is placed in this class template for the header-only config.
template <typename T = void> struct FMT_EXTERN_TEMPLATE_API basic_data {
@ -1593,7 +1593,8 @@ template <typename OutputIt, typename Char, typename UInt> struct int_writer {
make_checked(p, s.size()));
}
if (prefix_size != 0) p[-1] = static_cast<Char>('-');
write(out, basic_string_view<Char>(buffer.data(), buffer.size()), specs);
out = write(out, basic_string_view<Char>(buffer.data(), buffer.size()),
specs);
}
void on_chr() { *out++ = static_cast<Char>(abs_value); }

12
test/locale-test.cc
View File

@ -89,4 +89,16 @@ TEST(LocaleTest, WFormat) {
fmt::format(small_grouping_loc, L"{:L}", max_value<uint32_t>()));
}
TEST(LocaleTest, DoubleFormatter) {
auto loc = std::locale(std::locale(), new special_grouping<char>());
auto f = fmt::formatter<int>();
auto parse_ctx = fmt::format_parse_context("L");
f.parse(parse_ctx);
char buf[10] = {};
fmt::basic_format_context<char*, char> format_ctx(
buf, {}, fmt::detail::locale_ref(loc));
*f.format(12345, format_ctx) = 0;
EXPECT_STREQ("12,345", buf);
}
#endif // FMT_STATIC_THOUSANDS_SEPARATOR