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-rw-r--r--ext/io/console/console.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/ext/io/console/console.c b/ext/io/console/console.c
index dbbfbb7463..53580d1d4e 100644
--- a/ext/io/console/console.c
+++ b/ext/io/console/console.c
@@ -535,12 +535,14 @@ console_set_winsize(VALUE io, VALUE size)
VALUE row, col, xpixel, ypixel;
const VALUE *sz;
int fd;
+ int sizelen;
GetOpenFile(io, fptr);
size = rb_Array(size);
- rb_check_arity(RARRAY_LENINT(size), 2, 4);
+ rb_check_arity(sizelen = RARRAY_LENINT(size), 2, 4);
sz = RARRAY_CONST_PTR(size);
- row = sz[0], col = sz[1], xpixel = sz[2], ypixel = sz[3];
+ row = sz[0], col = sz[1], xpixel = ypixel = Qnil;
+ if (sizelen == 4) xpixel = sz[2], ypixel = sz[3];
fd = GetWriteFD(fptr);
#if defined TIOCSWINSZ
ws.ws_row = ws.ws_col = ws.ws_xpixel = ws.ws_ypixel = 0;