srcfile_state
struct srcfile_state *srcfile;
struct srcfile_state *srcfile = current_srcfile;
struct srcfile_state *srcfile_state;
srcfile_state = xmalloc(sizeof(struct srcfile_state));
memcpy(srcfile_state, pos->file, sizeof(struct srcfile_state));
pos_new->file = srcfile_state;
struct srcfile_state *current_srcfile; /* = NULL */
struct srcfile_state *prev;
extern struct srcfile_state *current_srcfile; /* = NULL */
struct srcfile_state *file;