1 files changed, 4 insertions, 1 deletions
diff --git a/support/xstdio.h b/support/xstdio.h
index 143957b6a8..807c3afc43 100644
--- a/support/xstdio.h
+++ b/support/xstdio.h
@@ -27,7 +27,10 @@ __BEGIN_DECLS
 FILE *xfopen (const char *path, const char *mode);
 void xfclose (FILE *);
 
-ssize_t xgetline (char **lineptr, size_t *n, FILE *stream);
+/* Read a line from FP, using getline.  *BUFFER must be NULL, or a
+   heap-allocated pointer of *LENGTH bytes.  Return the number of
+   bytes in the line if a line was read, or 0 on EOF.  */
+size_t xgetline (char **lineptr, size_t *n, FILE *stream);
 
 __END_DECLS