Fortran : portability fix for PR52279

Use of _() to enclose string literals assigned to arrays is not
portable.  Use pointer instead.

2020-07-02  Mark Eggleston  <[email protected]>

gcc/fortran/

	PR fortran/52279
	* check.c (gfc_invalid_boz):  Change array declaration for
	hint into a pointer.

Author: Mark Eggleston

gcc/fortran/check.c

@@ -67,7 +67,7 @@ gfc_invalid_boz (const char *msg, locus *loc)
       return false;
     }
 
-  const char hint[] = " [see %<-fno-allow-invalid-boz%>]";
+  const char *hint = " [see %<-fno-allow-invalid-boz%>]";
   size_t len = strlen (msg) + strlen (hint) + 1;
   char *msg2 = (char *) alloca (len);
   strcpy (msg2, msg);