gcc/testsuite/gcc.dg/diagnostic-ranges-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fdiagnostics-show-caret -Wall" } */
   3
   4 void test_range_of_unused_variable (void)
   5 {
   6   int redundant; /* { dg-warning "unused variable" } */
   7 /* { dg-begin-multiline-output "" }
   8    int redundant;
   9        ^~~~~~~~~
  10    { dg-end-multiline-output "" } */
  11 }