/* Print an error message. */
extern void error_at_line
- (struct fileloc *pos, const char *msg, ...) ATTRIBUTE_PRINTF_2;
+ (const struct fileloc *pos, const char *msg, ...) ATTRIBUTE_PRINTF_2;
/* Like asprintf, but calls fatal() on out of memory. */
extern char *xasprintf(const char *, ...) ATTRIBUTE_PRINTF_1;