1 files changed, 1 insertions, 0 deletions
diff --git a/awk.h b/awk.h
index ab088f19..9b09eab0 100644
--- a/awk.h
+++ b/awk.h
@@ -1607,6 +1607,7 @@ extern int os_isreadable(const awk_input_buf_t *iobuf, bool *isdir);
 extern int os_is_setuid(void);
 extern int os_setbinmode(int fd, int mode);
 extern void os_restore_mode(int fd);
+extern void os_maybe_set_errno(void);
 extern size_t optimal_bufsize(int fd, struct stat *sbuf);
 extern int ispath(const char *file);
 extern int isdirpunct(int c);