From: Thierry Fournier <thierry.fournier@ozon.io>
Date: Fri, 27 May 2016 14:35:01 +0000 (+0200)
Subject: BUG/MEDIUM: lua: converters doesn't work
X-Git-Tag: v1.7-dev4~80
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4a53bfdc1de46c78a23eabdefc4b418cff7d0403;p=thirdparty%2Fhaproxy.git

BUG/MEDIUM: lua: converters doesn't work

The number of arguments pushed in the stack are false, so we try to execute a
function out of the stack. This function is always a nil pointer, so the
following message is displayed.

   Lua converter 'testconv': runtime error: attempt to call a nil value.

Thanks Michael Ezzell for the repporting.

This patch must be backported in the 1.6 version.
---

diff --git a/src/hlua.c b/src/hlua.c
index 94f97429c8..953c219bdf 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -5163,7 +5163,7 @@ static int hlua_sample_conv_wrapper(const struct arg *arg_p, struct sample *smp,
 			return 0;
 		}
 		hlua_smp2lua(stream->hlua.T, smp);
-		stream->hlua.nargs = 2;
+		stream->hlua.nargs = 1;
 
 		/* push keywords in the stack. */
 		if (arg_p) {