| Issue |
58142
|
| Summary |
error: definition with same mangled name when specializing a concepted template
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
Alcaro
|
```c++
#include <cstdio>
#include <concepts>
template <typename T>
void fun(T);
template <>
void fun(char c)
{
std::puts("foo<char>()");
}
template <std::integral I>
void fun(I i)
{
std::puts("foo<std::integral>()");
}
int main()
{
fun<char>(' ');
}
```
Compile with -std=c++20.
Result:
\<source\>:14:6: error: definition with same mangled name '_Z3funIcEvT_' as another definition
\<source\>:8:6: note: previous definition is here
Expected: Prints foo\<char\>(), or at least a less cryptic error
https://godbolt.org/z/axvdbK1Eh
GCC and MSVC have similar bugs:
(will edit in ten seconds)
https://developercommunity.visualstudio.com/t/Template-explicit-specializationconcept/10012835
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