diff --git a/programs/develop/ktcc/trunk/libc.obj/include/stdio.h b/programs/develop/ktcc/trunk/libc.obj/include/stdio.h
index 0c2c537341..24383b2602 100644
--- a/programs/develop/ktcc/trunk/libc.obj/include/stdio.h
+++ b/programs/develop/ktcc/trunk/libc.obj/include/stdio.h
@@ -40,6 +40,7 @@ extern int  _FUNC(printf)(const char* format, ...);
 extern int  _FUNC(sprintf)(char* buffer, const char* format, ...);
 extern int  _FUNC(snprintf)(char* buffer, size_t count, const char* format, ...);
 extern int  _FUNC(vsnprintf)(char* buffer, size_t count, const char* format, va_list va);
+extern int  _FUNC(vsprintf)(char* buffer, const char* format, va_list va);
 extern int  _FUNC(vprintf)(const char* format, va_list va);
 
 extern void _FUNC(debug_printf)(const char* format, ...);
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/Makefile b/programs/develop/ktcc/trunk/libc.obj/samples/Makefile
index 2130a39e82..b0ad39d36e 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/Makefile
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/Makefile
@@ -2,7 +2,7 @@
 KTCC=kos32-tcc
 FASM= fasm
 KPACK = kpack
-CFLAGS = -I../include 
+CFLAGS = -I../include -I../../../../../../contrib/sdk/sources/SDL-1.2.2_newlib/include
 LDFLAGS = -nostdlib -L../../bin/lib ../../bin/lib/crt0.o
 
 BIN= stdio_test.kex \
@@ -21,9 +21,10 @@ clayer/libimg.kex \
 clayer/dialog.kex \
 clayer/msgbox.kex \
 clayer/boxlib.kex \
-thread_work.kex
+thread_work.kex \
+sdltest.kex 
 
-LIBS= -ltcc -ldialog -lrasterworks -limg -lbox -lmsgbox -lnetwork -lc.obj
+LIBS= -lSDL -ltcc -lsound -ldialog -lrasterworks -limg -lbox -lmsgbox -lnetwork -lc.obj
 
 all: $(BIN)
 	
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/build_all.sh b/programs/develop/ktcc/trunk/libc.obj/samples/build_all.sh
index 23e0b039bb..a452e4ff34 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/build_all.sh
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/build_all.sh
@@ -17,3 +17,4 @@ cp /kolibrios/develop/tcc/samples/clayer/logo.png /tmp0/1/tcc_samples/logo.png
 /kolibrios/develop/tcc/tcc clayer/msgbox.c -o /tmp0/1/tcc_samples/msgbox -ltcc -lmsgbox -lc.obj
 /kolibrios/develop/tcc/tcc clayer/rasterworks.c -o /tmp0/1/tcc_samples/rasterworks -ltcc -lrasterworks -lc.obj
 /kolibrios/develop/tcc/tcc thread_work.c -o /tmp0/1/tcc_samples/thread_work -ltcc -lc.obj
+/kolibrios/develop/tcc/tcc -I/kolibrios/develop/tcc/include/SDL sdltest.c -o /tmp0/1/tcc_samples/sdltest -lSDL -lsound -ltcc -lc.obj
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/sdltest.c b/programs/develop/ktcc/trunk/libc.obj/samples/sdltest.c
new file mode 100755
index 0000000000..c66e601a7c
--- /dev/null
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/sdltest.c
@@ -0,0 +1,79 @@
+#include "SDL.h"
+#include <stdlib.h>
+
+#define WIDTH 640
+#define HEIGHT 480
+#define BPP 4
+#define DEPTH 32
+ 
+void setpixel(SDL_Surface *screen, int x, int y, Uint8 r, Uint8 g, Uint8 b)
+{
+    Uint32 *pixmem32;
+    Uint32 colour;  
+ 
+    colour = SDL_MapRGB( screen->format, r, g, b );
+ 
+    pixmem32 = (Uint32*) screen->pixels  + y + x;
+    *pixmem32 = colour;
+}
+ 
+ 
+void DrawScreen(SDL_Surface* screen, int h)
+{
+    int x, y, ytimesw;
+ 
+    if(SDL_MUSTLOCK(screen))
+    {
+        if(SDL_LockSurface(screen) < 0) return;
+    }
+ 
+    for(y = 0; y < screen->h; y++ )
+    {
+        ytimesw = y*screen->pitch/BPP;
+        for( x = 0; x < screen->w; x++ )
+        {
+            setpixel(screen, x, ytimesw, (x*x)/256+3*y+h, (y*y)/256+x+h, h);
+        }
+    }
+    if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
+ 
+    SDL_Flip(screen);
+}
+ 
+ 
+int main(int argc, char* argv[])
+{
+    SDL_Surface *screen;
+    SDL_Event event;
+ 
+    int keypress = 0;
+    int h=0;
+ 
+    if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
+   
+    if (!(screen = SDL_SetVideoMode(WIDTH, HEIGHT, DEPTH, SDL_FULLSCREEN|SDL_HWSURFACE)))
+    {
+        SDL_Quit();
+        return 1;
+    }
+ 
+    while(!keypress)
+    {
+         DrawScreen(screen,h++);
+         while(SDL_PollEvent(&event))
+         {      
+              switch (event.type)
+              {
+                  case SDL_QUIT:
+                      keypress = 1;
+                      break;
+                  case SDL_KEYDOWN:
+                       keypress = 1;
+                       break;
+              }
+         }
+    }
+ 
+    SDL_Quit();
+    return 0;
+}
diff --git a/programs/develop/ktcc/trunk/libc.obj/source/stdio/vprintf.c b/programs/develop/ktcc/trunk/libc.obj/source/stdio/vprintf.c
index 8299b669d8..9af1f74600 100644
--- a/programs/develop/ktcc/trunk/libc.obj/source/stdio/vprintf.c
+++ b/programs/develop/ktcc/trunk/libc.obj/source/stdio/vprintf.c
@@ -10,6 +10,11 @@
 #include <limits.h>
 //#include "format_print.h"
 
+int vsprintf (char * s, const char * format, va_list arg)
+{
+    return vsnprintf(s, STDIO_MAX_MEM, format, arg);
+}
+
 int vprintf ( const char * format, va_list arg )
 {
   int len = 0;
diff --git a/programs/develop/ktcc/trunk/libc.obj/source/symbols.txt b/programs/develop/ktcc/trunk/libc.obj/source/symbols.txt
index e5baef06bf..43a24dc64f 100644
--- a/programs/develop/ktcc/trunk/libc.obj/source/symbols.txt
+++ b/programs/develop/ktcc/trunk/libc.obj/source/symbols.txt
@@ -38,6 +38,7 @@ tmpnam
 vfscanf
 vprintf
 vfscanf
+vsprintf
 vsnprintf
 vsscanf
 ungetc