/* Unpatched, this file would include "inc/ foo.h" (note the space) */
#define PREINC_XSTR(str) #str
#define PREINC_STR(str) PREINC_XSTR(str)
#define COMP_INC(comp,file) PREINC_STR(comp/file)
#include COMP_INC(inc, foo.h)