modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/970214-2.c (about) 1 #define m(L) (L'1' + (L)) 2 main () 3 { 4 exit (m (0) != L'1'); 5 }