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Fix formatting of bool with FMT_COMPILE and add more tests

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This commit is contained in:
Victor Zverovich 2020-06-14 07:16:50 -07:00
parent e956a14e9e
commit d702a68df2
2 changed files with 10 additions and 2 deletions
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3
include/fmt/format.h
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@ -3380,7 +3380,8 @@ inline std::string to_string(const T& value) {
}
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
inline std::string to_string(T value) {
char buffer[detail::digits10<T>() + 2];
// Buffer should be large enough to store the number or "false" (for bool).
char buffer[(std::max)(detail::digits10<T>() + 2, 5)];
char* begin = buffer;
char* end = detail::write<char>(begin, value);
return std::string(begin, end);

9
test/compile-test.cc
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@ -144,8 +144,15 @@ TEST(CompileTest, EmptyFormatString) {
}
#ifdef __cpp_if_constexpr
TEST(CompileTest, Basic) {
TEST(CompileTest, FormatDefault) {
EXPECT_EQ("42", fmt::format(FMT_COMPILE("{}"), 42));
EXPECT_EQ("42", fmt::format(FMT_COMPILE("{}"), 42u));
EXPECT_EQ("42", fmt::format(FMT_COMPILE("{}"), 42ll));
EXPECT_EQ("42", fmt::format(FMT_COMPILE("{}"), 42ull));
EXPECT_EQ("true", fmt::format(FMT_COMPILE("{}"), true));
EXPECT_EQ("x", fmt::format(FMT_COMPILE("{}"), 'x'));
EXPECT_EQ("4.2", fmt::format(FMT_COMPILE("{}"), 4.2));
EXPECT_EQ("foo", fmt::format(FMT_COMPILE("{}"), "foo"));
EXPECT_EQ("foo", fmt::format(FMT_COMPILE("{}"), std::string("foo")));
}
#endif