From 63b1630356f41c1de164aa98ad6ae16db8411a21 Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Date: Mon, 1 Nov 2010 09:34:12 +0000
Subject: [PATCH] Fix evaluation of expressions of the form: E1;E2.

The pointer to the char ';' has to be increased before to evaluate
";E2".

Originally committed as revision 25623 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavutil/avutil.h | 2 +-
 libavutil/eval.c   | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index 74247d3ae4..ba0601cd26 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -41,7 +41,7 @@
 
 #define LIBAVUTIL_VERSION_MAJOR 50
 #define LIBAVUTIL_VERSION_MINOR 32
-#define LIBAVUTIL_VERSION_MICRO  3
+#define LIBAVUTIL_VERSION_MICRO  4
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \
diff --git a/libavutil/eval.c b/libavutil/eval.c
index 6e0349872b..c1a0539ecd 100644
--- a/libavutil/eval.c
+++ b/libavutil/eval.c
@@ -404,12 +404,12 @@ static int parse_expr(AVExpr **e, Parser *p)
     if ((ret = parse_subexpr(&e0, p)) < 0)
         return ret;
     while (*p->s == ';') {
+        p->s++;
         e1 = e0;
         if ((ret = parse_subexpr(&e2, p)) < 0) {
             av_free_expr(e1);
             return ret;
         }
-        p->s++;
         e0 = new_eval_expr(e_last, 1, e1, e2);
         if (!e0) {
             av_free_expr(e1);
@@ -534,6 +534,7 @@ int main(void)
     double d;
     const char **expr, *exprs[] = {
         "",
+        "1;2",
         "1+(5-2)^(3-1)+1/2+sin(PI)-max(-2.2,-3.1)",
         "80G/80Gi"
         "1k",