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-rw-r--r--ext/socket/socket.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/socket/socket.c b/ext/socket/socket.c
index 1ebeef7106..2e7bf96c87 100644
--- a/ext/socket/socket.c
+++ b/ext/socket/socket.c
@@ -1789,7 +1789,7 @@ socket_s_ip_address_list(VALUE self)
int ret;
struct lifnum ln;
struct lifconf lc;
- char *reason = NULL;
+ const char *reason = NULL;
int save_errno;
int i;
VALUE list = Qnil;