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Require Range to be a range in UTFStringCodePoints to improve error messages #3733

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Require Range to be a range in UTFStringCodePoints to improve error messages #3733

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Require Range to be a range in UTFStringCodePoints to improve error m…
eggrobin Oct 22, 2025
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Include <version>
eggrobin Oct 22, 2025
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Unsafe too
eggrobin Oct 22, 2025
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3 changes: 3 additions & 0 deletions icu4c/source/common/unicode/utfiterator.h
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Expand Up @@ -1749,6 +1749,9 @@ auto utfIterator(UnitIter p) {
* @see utfStringCodePoints
*/
template<typename CP32, UTFIllFormedBehavior behavior, typename Range>
#if defined(__cpp_lib_ranges)
requires std::ranges::range<Range>
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@markusicu markusicu Nov 11, 2025

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Suggested change
requires std::ranges::range<Range>
requires std::ranges::range<Range>

#endif
class UTFStringCodePoints {
static_assert(sizeof(CP32) == 4, "CP32 must be a 32-bit type to hold a code point");
public:
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