ambiguous overload of count_digits() on xtensa esp32s3 gcc 12.2.0 (20230208)

[m-mcgowan]

godbolt repro

In file included from /opt/compiler-explorer/libs/fmt/trunk/include/fmt/core.h:5,
                 from <source>:1:
/opt/compiler-explorer/libs/fmt/trunk/include/fmt/format.h: In function 'constexpr OutputIt fmt::v11::detail::write_exponent(int, OutputIt)':
/opt/compiler-explorer/libs/fmt/trunk/include/fmt/format.h:1608:56: error: call of overloaded 'count_digits(unsigned int&)' is ambiguous
 1608 |     return format_decimal<Char>(out, uexp, count_digits(uexp));
      |                                            ~~~~~~~~~~~~^~~~~~
/opt/compiler-explorer/libs/fmt/trunk/include/fmt/format.h:1183:29: note: candidate: 'int fmt::v11::detail::count_digits(uint64_t)'
 1183 | FMT_CONSTEXPR20 inline auto count_digits(uint64_t n) -> int {
      |                             ^~~~~~~~~~~~
/opt/compiler-explorer/libs/fmt/trunk/include/fmt/format.h:1233:29: note: candidate: 'int fmt::v11::detail::count_digits(uint32_t)'
 1233 | FMT_CONSTEXPR20 inline auto count_digits(uint32_t n) -> int {
      |                             ^~~~~~~~~~~~
Compiler returned: 1

[vitaut]

Fixed in 9831431. Thanks for reporting!

[m-mcgowan]

Thank you for the fix! I looked at the code, but couldn't grasp it well enough to suggest a fix.