The docs say this about the wiredtiger_open extensions configuration:
list of shared library extensions to load (using dlopen). Optional values are passed as
the config parameter to WT_CONNECTION::load_extension. For example,
extensions=(/path/ext.so={entry=my_entry}).
That looks to me like the application is supposed to append {{
{entry=my_entry}}}, but it also looks to me like the code prepends entry too:
/* Load any extensions referenced in the config. */
WT_ERR(__wt_config_gets(session, cfg, "extensions", &cval));
WT_ERR(__wt_config_subinit(session, &subconfig, &cval));
while ((ret = __wt_config_next(&subconfig, &skey, &sval)) == 0) {
WT_ERR(__wt_buf_fmt(
session, &expath, "%.*s", (int)skey.len, skey.str));
if (sval.len > 0)
WT_ERR(__wt_buf_fmt(session, &exconfig,
"entry=%.*s\n", (int)sval.len, sval.str));
WT_ERR(conn->iface.load_extension(&conn->iface,
expath.data, (sval.len > 0) ? exconfig.data : NULL));
}
I think the fix is to just delete "entry=" in the call to __wt_buf_fmt, my guess is this was added before the "terminate" configuration string was added to WT_CONNECTION.load_extension, when there was only one possibility, entry.