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-rw-r--r--stdio/linewrap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/stdio/linewrap.c b/stdio/linewrap.c
index 82b6a326a5..37780d21a3 100644
--- a/stdio/linewrap.c
+++ b/stdio/linewrap.c
@@ -327,7 +327,7 @@ __line_wrap_output (FILE *stream, int c)
simply dropped until a newline. Returns STREAM after modifying it, or
NULL if there was an error. */
FILE *
-line_wrap_stream (FILE *stream, size_t lmargin, size_t rmargin, size_t wmargin)
+line_wrap_stream (FILE *stream, size_t lmargin, size_t rmargin, ssize_t wmargin)
{
struct line_wrap_data *d = malloc (sizeof *d);