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-rw-r--r--libguile/filesys.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/libguile/filesys.h b/libguile/filesys.h
index 7573b6332..7859cf97b 100644
--- a/libguile/filesys.h
+++ b/libguile/filesys.h
@@ -53,8 +53,9 @@
extern long scm_tc16_dir;
-#define SCM_DIRP(x) (SCM_NIMP(x) && (SCM_TYP16(x)==(scm_tc16_dir)))
-#define SCM_OPDIRP(x) (SCM_NIMP(x) && (SCM_UNPACK_CAR(x)==(scm_tc16_dir | SCM_OPN)))
+#define SCM_DIRP(x) (!SCM_IMP (x) && (SCM_TYP16 (x) == scm_tc16_dir))
+#define SCM_OPDIRP(x) (!SCM_IMP (x) && (SCM_CELL_WORD_0 (x) == (scm_tc16_dir | SCM_OPN)))
+
extern SCM scm_chown (SCM object, SCM owner, SCM group);