| Issue |
173985
|
| Summary |
[clang] erroneously does not accept `$` as user-defined literal operator name
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
toughengineer
|
While trying to compile this code:
```c++
#include <iostream>
auto operator ""_$(const char *p, size_t n) {
return std::string(p, n);
}
int main() {
std::cout << "xxx"_$;
}
```
Clang (current trunk) gives an error:
```
error: 'operator""_' cannot be the name of a variable or data member
```
<details><summary>Click/tap to see the whole output.</summary>
```
<source>:3:6: error: 'operator""_' cannot be the name of a variable or data member
3 | auto operator ""_$(const char *p, size_t n) {
| ^
<source>:3:18: error: expected ';' after top level declarator
3 | auto operator ""_$(const char *p, size_t n) {
| ^
| ;
<source>:8:21: error: no matching literal operator for call to 'operator""_' with arguments of types 'const char *' and '__size_t' (aka 'unsigned long'), and no matching literal operator template
8 | std::cout << "xxx"_$;
| ^
3 errors generated.
```
</details>
This issue reproduces since Clang 3.2 (as far as I can tell, in 3.1 it also does not work properly).
Latest versions of GCC and MSVC correctly compile the code.
Reproduction: https://godbolt.org/z/G4E7n1Gdq
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