Error in mod_tile compile with centos 6.3 gcc 4.4.6

I tried compiling the last version of mod_tile from svn (rev 28723) and I got this message:

gen_tile.cpp: In function ‘void render_init(const char*, const char*, int)’:
gen_tile.cpp:506: error: base operand of ‘->’ has non-pointer type ‘mapnik::datasource_cache’

So I evidently changed the code to fix this, and I'm pretty sure I compiled the same version on a fedroa 17 box yesterday without any error. (May be a problem with gcc)

Index: gen_tile.cpp
===================================================================
--- gen_tile.cpp    (revision 28723)
+++ gen_tile.cpp    (working copy)
@@ -503,7 +503,7 @@
 void render_init(const char *plugins_dir, const char* font_dir, int font_dir_recurse)
 {
     syslog(LOG_INFO, "Renderd is using mapnik version %i.%i.%i", (MAPNIK_VERSION / 100000), ((MAPNIK_VERSION / 100) % 1000), (MAPNIK_VERSION % 100));
-    mapnik::datasource_cache::instance()->register_datasources(plugins_dir);
+    mapnik::datasource_cache::instance().register_datasources(plugins_dir);
     load_fonts(font_dir, font_dir_recurse);
 }

I'm currently using Centos 6.3 kernel 2.6.32-279.5.2.el6.x86_64 with :

• gcc-gfortran-4.4.6-4.el6.x86_64
• libgcc-4.4.6-4.el6.x86_64
• gcc-c++-4.4.6-4.el6.x86_64
• gcc-4.4.6-4.el6.x86_64

I don't even know if it qualify as a problem ??