https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97420
Bug ID: 97420
Summary: error: no matching function for call to 'find_if'
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: tangyixuan at mail dot dlut.edu.cn
Target Milestone: ---
Hi, the following code maybe valid, since 'std::find_if' is allowed since
c++17.
https://en.cppreference.com/w/cpp/algorithm/find
$ cat s.cpp
# include <cctype>
# include <algorithm>
template<int (& F)(int)>
constexpr int A(unsigned char a) noexcept(noexcept(F(a)))
{ return F(a); }
int main()
{
const char t[] = "a";
std::find_if(t, t + 1, A<std::isspace>);
}
$ g++ -c -std=c++2a s.cpp
s.cpp: In function ‘int main()’:
s.cpp:12:43: error: no matching function for call to ‘find_if(const char [2],
const char*, <unresolved overloaded function type>)’
12 | std::find_if(t, t + 1, A<std::isspace>);
|
