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Fix MSVC test failures. #269
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…tatic_cast in problematic areas
griwes
suggested changes
Apr 25, 2022
| @@ -19,6 +19,11 @@ | |||
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| #include "test_macros.h" | |||
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| #if defined(_MSC_VER) | |||
| # pragma warning( disable: 4307 ) | |||
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Can you add comments to these, similarly how the 4244 disables have comments?
| @@ -2534,7 +2534,7 @@ year_month_day::__from_days(days __d) noexcept | |||
| const unsigned __doy = __doe - (365 * __yoe + __yoe/4 - __yoe/100); // [0, 365] | |||
| const unsigned __mp = (5 * __doy + 2)/153; // [0, 11] | |||
| const unsigned __dy = __doy - (153 * __mp + 2)/5 + 1; // [1, 31] | |||
| const unsigned __mth = __mp + (__mp < 10 ? 3 : -9); // [1, 12] | |||
| const unsigned __mth = __mp + static_cast<unsigned>(__mp < 10 ? 3 : -9); // [1, 12] | |||
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Re-align the trailing comment with the 9nes in the previous lines.
| const unsigned __doy = (153 * (__mth + (__mth > 2 ? -3 : 9)) + 2) / 5 + __dy-1; // [0, 365] | ||
| const unsigned __doe = __yoe * 365 + __yoe/4 - __yoe/100 + __doy; // [0, 146096] | ||
| const unsigned __yoe = static_cast<unsigned>(__yr - __era * 400); // [0, 399] | ||
| const unsigned __doy = static_cast<unsigned>((153 * (__mth + static_cast<unsigned>(__mth > 2 ? -3 : 9)) + 2) / 5 + __dy-1); // [0, 365] |
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Why is the outer static_cast needed here?
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Two problems mainly. __mth + negative signed integer is a warning. The assignment ends up being a demotion as well after xy / 5 + __dy-1
wmaxey
commented
Apr 26, 2022
griwes
approved these changes
Apr 26, 2022
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This commit chain will include fixes to address failures detected across several versions of MSVC. I've used the compilers listed below that I believe are major releases for MSVC.
MSVC versions that are clean: