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-rw-r--r--libguile/validate.h12
1 files changed, 8 insertions, 4 deletions
diff --git a/libguile/validate.h b/libguile/validate.h
index a1b1b553a..237865547 100644
--- a/libguile/validate.h
+++ b/libguile/validate.h
@@ -3,8 +3,8 @@
#ifndef SCM_VALIDATE_H
#define SCM_VALIDATE_H
-/* Copyright (C) 1999, 2000, 2001, 2002, 2004, 2006, 2007, 2009,
- * 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
+/* Copyright (C) 1999-2002, 2004, 2006, 2007, 2009, 2011-2014,
+ * 2018 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@@ -255,16 +255,20 @@
SCM_ASSERT (scm_ilength (lst) > 0, lst, pos, FUNC_NAME); \
} while (0)
+/* Note: we use (cvar != -1) instead of (cvar >= 0) below
+ in case 'cvar' is of unsigned type. */
#define SCM_VALIDATE_LIST_COPYLEN(pos, lst, cvar) \
do { \
cvar = scm_ilength (lst); \
- SCM_ASSERT (cvar >= 0, lst, pos, FUNC_NAME); \
+ SCM_ASSERT (cvar != -1, lst, pos, FUNC_NAME); \
} while (0)
+/* Note: we use (cvar != -1 && cvar != 0) instead of
+ (cvar >= 1) below in case 'cvar' is of unsigned type. */
#define SCM_VALIDATE_NONEMPTYLIST_COPYLEN(pos, lst, cvar) \
do { \
cvar = scm_ilength (lst); \
- SCM_ASSERT (cvar >= 1, lst, pos, FUNC_NAME); \
+ SCM_ASSERT (cvar != -1 && cvar != 0, lst, pos, FUNC_NAME); \
} while (0)
#define SCM_VALIDATE_ALISTCELL(pos, alist) \