| Issue |
115222
|
| Summary |
pack indexing addition to clang makes some valid C++11 code no longer compile in C++11-23 modes
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
pinskia
|
The example from https://eel.is/c++draft/diff#cpp23.dcl.dcl-2 which describes a different between C++23 and C++26:
```
template <typename... T>
void f(T... [1]);
template <typename... T>
void g(T... ptr[1]);
int main() {
f<int, double>(nullptr, nullptr); // ill-formed in C++26, but for c++11-23 would be void f<int, double>(int [1], double [1])
g<int, double>(nullptr, nullptr); // ok
}
```
No longer compiles in clang 19 with -std=c++11 due to the addition of pack indexing.
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