https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116802
Bug ID: 116802
Summary: Symbol `is` (non-standard) is user inside the library.
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: wilczew.tymon at gmail dot com
Target Milestone: ---
All symbols that are not defined by the standard, should be reserved
identifiers. `is` is not a reserved identifier, yet it fails to compile. For
example compiling with -Dis= https://godbolt.org/z/cdan8r4b6.
```cpp
#define is
#include <iostream>
int main(void)
{
return 0;
}
```
