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-rw-r--r--libguile/scmsigs.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libguile/scmsigs.c b/libguile/scmsigs.c
index aea5d0aea..ac1815170 100644
--- a/libguile/scmsigs.c
+++ b/libguile/scmsigs.c
@@ -366,7 +366,9 @@ SCM
scm_usleep (i)
SCM i;
{
+#ifndef USLEEP_RETURNS_VOID
int j;
+#endif
SCM_ASSERT (SCM_INUMP (i) && (SCM_INUM (i) >= 0), i, SCM_ARG1, s_usleep);
#ifdef USLEEP_RETURNS_VOID
usleep (SCM_INUM (i));