ref: bf30308c5a79d7e15d662a35490a4ab92b85fb89
dir: /tests/execute/0152-cat.c/
#define CAT(x,y) x ## y #define XCAT(x,y) CAT(x,y) #define FOO foo #define BAR bar int main(void) { int foo, bar, foobar; CAT(foo,bar) = foo + bar; XCAT(FOO,BAR) = foo + bar; return 0; }