There's a bug in the VC7 optimizer relating to the duff loop optimiza…

…tion
libsdl-org · Dec 2, 2002 · 2c3710c · 2c3710c
1 parent dca396b
commit 2c3710c
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/video/SDL_blit.h b/src/video/SDL_blit.h
@@ -375,7 +375,11 @@ do {						\
 } while(0)
 
 /* This is a very useful loop for optimizing blitters */
+#if defined(_MSC_VER) && (_MSC_VER == 1300)
+/* There's a bug in the Visual C++ 7 optimizer when compiling this code */
+#else
 #define USE_DUFFS_LOOP
+#endif
 #ifdef USE_DUFFS_LOOP
 
 /* 8-times unrolled loop */