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-rw-r--r--libguile/poll.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libguile/poll.c b/libguile/poll.c
index d61d51979..1bb75727b 100644
--- a/libguile/poll.c
+++ b/libguile/poll.c
@@ -184,6 +184,7 @@ scm_init_poll (void)
{
#if HAVE_POLL
scm_c_define_gsubr ("primitive-poll", 4, 0, 0, scm_primitive_poll);
+ scm_c_define ("%sizeof-struct-pollfd", scm_from_size_t (sizeof (struct pollfd)));
#else
scm_misc_error ("%init-poll", "`poll' unavailable on this platform", SCM_EOL);
#endif