@@ -501,17 +501,16 @@ namespace ranges
if constexpr (contiguous_iterator<_Iter>)
if (!is_constant_evaluated())
{
- if (static_cast<iter_value_t<_Iter>>(__value) != __value)
- return __last;
-
+ using _Vt = iter_value_t<_Iter>;
auto __n = __last - __first;
- if (__n > 0)
- {
- const int __ival = static_cast<int>(__value);
- const void* __p0 = std::to_address(__first);
- if (auto __p1 = __builtin_memchr(__p0, __ival, __n))
- __n = (const char*)__p1 - (const char*)__p0;
- }
+ if (static_cast<_Vt>(__value) == __value) [[likely]]
+ if (__n > 0)
+ {
+ const int __ival = static_cast<int>(__value);
+ const void* __p0 = std::to_address(__first);
+ if (auto __p1 = __builtin_memchr(__p0, __ival, __n))
+ __n = (const char*)__p1 - (const char*)__p0;
+ }
return __first + __n;
}
@@ -66,9 +66,19 @@ test02()
static_assert(ranges::find(y, 5, &Y::j) == y+3);
}
+void
+test_pr115799()
+{
+ const char str[3] = { 'a', 'b', 'c' };
+ __gnu_test::test_contiguous_sized_range<const char> r(str);
+ VERIFY(std::ranges::find(r, 'a') == std::ranges::begin(r));
+ VERIFY(std::ranges::find(r, 'a'+255) == std::ranges::end(r));
+}
+
int
main()
{
test01();
test02();
+ test_pr115799();
}