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-rw-r--r--src/openssl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/openssl.c b/src/openssl.c
index 66c5d8b..67c8263 100644
--- a/src/openssl.c
+++ b/src/openssl.c
@@ -8510,7 +8510,7 @@ static int ssl_getClientRandom(lua_State *L) {
if (LUAL_BUFFERSIZE < len)
luaL_error(L, "ssl:getClientRandom: LUAL_BUFFERSIZE(%d) < SSL_get_client_random(ssl, NULL, 0)", (int)LUAL_BUFFERSIZE, (int)len);
luaL_buffinit(L, &B);
- out = luaL_prepbuffer(&B);
+ out = (unsigned char*)luaL_prepbuffer(&B);
len = SSL_get_client_random(ssl, out, len);
luaL_addsize(&B, len);
luaL_pushresult(&B);