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-rw-r--r--libguile/foreign.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/libguile/foreign.c b/libguile/foreign.c
index db8e13127..76e43f3ad 100644
--- a/libguile/foreign.c
+++ b/libguile/foreign.c
@@ -329,9 +329,15 @@ SCM_DEFINE (scm_dereference_pointer, "dereference-pointer", 1, 0, 0,
"holds a pointer, return this pointer.")
#define FUNC_NAME s_scm_dereference_pointer
{
+ void **ptr;
+
SCM_VALIDATE_POINTER (1, pointer);
- return scm_from_pointer (* (void **) SCM_POINTER_VALUE (pointer), NULL);
+ ptr = SCM_POINTER_VALUE (pointer);
+ if (SCM_UNLIKELY (ptr == NULL))
+ null_pointer_error (FUNC_NAME);
+
+ return scm_from_pointer (*ptr, NULL);
}
#undef FUNC_NAME