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-rw-r--r--libguile/numbers.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/libguile/numbers.c b/libguile/numbers.c
index 154974d24..4afc1578b 100644
--- a/libguile/numbers.c
+++ b/libguile/numbers.c
@@ -4390,6 +4390,17 @@ scm_i_big2dbl (SCM b)
#ifdef GUILE_DEBUG
+#ifndef SIZE_MAX
+#define SIZE_MAX ((size_t) (-1))
+#endif
+#ifndef PTRDIFF_MIN
+#define PTRDIFF_MIN \
+ ((ptrdiff_t) ((ptrdiff_t) 1 << (sizeof (ptrdiff_t) * 8 - 1)))
+#endif
+#ifndef PTRDIFF_MAX
+#define PTRDIFF_MAX (~ PTRDIFF_MIN)
+#endif
+
#define CHECK(type, v) \
do { \
if ((v) != scm_num2##type (scm_##type##2num (v), 1, "check_sanity")) \