[retro-gtk] glsl-filter: Check the size of the shader sources

[Adrien Plazas <aplazas src gnome org>]

commit 2b337571a0bf861e454a434aab1b2a91840cddc0
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu Nov 16 13:50:21 2017 +0100

    glsl-filter: Check the size of the shader sources
    
    This avoid failing a shader's compilation by overreading the source
    string as it isn't NULL-terminated.

 retro-gtk/retro-glsl-filter.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/retro-gtk/retro-glsl-filter.c b/retro-gtk/retro-glsl-filter.c
index 3476021..b82c0a4 100644
--- a/retro-gtk/retro-glsl-filter.c
+++ b/retro-gtk/retro-glsl-filter.c
@@ -239,11 +239,13 @@ create_shader (GBytes *source_bytes,
                GLenum  shader_type)
 {
   const gchar *source;
+  gint size;
   GLuint shader;
 
   source = g_bytes_get_data (source_bytes, NULL);
+  size = g_bytes_get_size (source_bytes);
   shader = glCreateShader (shader_type);
-  glShaderSource (shader, 1, &source, NULL);
+  glShaderSource (shader, 1, &source, &size);
   glCompileShader (shader);
 
   return shader;