[Bug target/124172] Building a RISC-V cross-compiler fails when using Clang

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124172

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Build|x86_64-apple-darwin         |
               Host|x86_64-apple-darwin         |

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Second the problem is UNKNOWN_LOCATION is wrong here, it should have been
nullptr.


As:
#define UNKNOWN_LOCATION ((location_t) 0)