Compiler: do not generate trigraph sequence ...

See http://stackoverflow.com/questions/1234582/purpose-of-trigraph-sequences-in-c

/var/folders/t6/__fyp3752vl2fj94wrp8hh140000gn/T/camlasm044558.s:137:14: warning: trigraph ignored [-Wtrigraphs]
.ascii  "/*<<??>>*/"