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-rw-r--r--ext/dl/function.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/dl/function.c b/ext/dl/function.c
index 362de8eb97..377d2fe054 100644
--- a/ext/dl/function.c
+++ b/ext/dl/function.c
@@ -157,7 +157,7 @@ unwrap_ffi(VALUE rettype, dl_generic retval)
return INT2NUM(retval.sint);
case DLTYPE_LONG:
if (signed_p) return LONG2NUM(retval.slong);
- return LONG2NUM(retval.ulong);
+ return ULONG2NUM(retval.ulong);
#if HAVE_LONG_LONG
case DLTYPE_LONG_LONG:
return rb_ll2inum(retval.long_long);