[flang][rt] Allow ReportFatalUserError to be build on device (#133979)

Author: clementval

flang-rt/lib/runtime/stop.cpp

@@ -240,7 +240,7 @@ static RT_NOINLINE_ATTR void PrintBacktrace() {
 
 RT_OPTNONE_ATTR void FORTRAN_PROCEDURE_NAME(backtrace)() { PrintBacktrace(); }
 
-[[noreturn]] void RTNAME(ReportFatalUserError)(
+[[noreturn]] RT_API_ATTRS void RTNAME(ReportFatalUserError)(
     const char *message, const char *source, int line) {
   Fortran::runtime::Terminator{source, line}.Crash(message);
 }

flang/include/flang/Runtime/stop.h

@@ -35,7 +35,7 @@ void FORTRAN_PROCEDURE_NAME(backtrace)(NO_ARGUMENTS);
 
 // Crash with an error message when the program dynamically violates a Fortran
 // constraint.
-NORETURN void RTNAME(ReportFatalUserError)(
+NORETURN RT_API_ATTRS void RTNAME(ReportFatalUserError)(
     const char *message, const char *source, int line);
 
 FORTRAN_EXTERN_C_END