Print lzo_init() return code in case of errors

This can help pinpointing what exactly went wrong in case of
init failures (library version mismatch, memory issues, ...)

Signed-off-by: Gert Doering <gert@greenie.muc.de>
Acked-by: Arne Schwabe <arne@rfc2549.org>
Message-Id: <20180713081951.31174-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg17248.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>

diff --git a/src/openvpn/lzo.c b/src/openvpn/lzo.c
index 8d9efeaf80cd4b7f297c190d944fc29354c6431e..e3be6adf7a35fdb781d02c764c089a9a7b2da3a3 100644 (file)
--- a/src/openvpn/lzo.c
+++ b/src/openvpn/lzo.c
@@ -103,9 +103,11 @@ lzo_compress_init(struct compress_context *compctx)
     msg(D_INIT_MEDIUM, "LZO compression initializing");
     ASSERT(!(compctx->flags & COMP_F_SWAP));
     compctx->wu.lzo.wmem_size = LZO_WORKSPACE;
-    if (lzo_init() != LZO_E_OK)
+
+    int lzo_status = lzo_init();
+    if (lzo_status != LZO_E_OK)
     {
-        msg(M_FATAL, "Cannot initialize LZO compression library");
+        msg(M_FATAL, "Cannot initialize LZO compression library (lzo_init() returns %d)", lzo_status);
     }
     compctx->wu.lzo.wmem = (lzo_voidp) lzo_malloc(compctx->wu.lzo.wmem_size);
     check_malloc_return(compctx->wu.lzo.wmem);