strict aliasing rules say this sort of casting is illegal

http://bugs.gentoo.org/172421

--- lib3ds/io.c
+++ lib3ds/io.c
@@ -249,6 +249,7 @@
 {
   Lib3dsByte b[4];
   Lib3dsDword d;
+  Lib3dsFloat ret;
 
   ASSERT(io);
   lib3ds_io_read(io, b, 4);
@@ -256,7 +257,8 @@
     ((Lib3dsDword)b[2] << 16) |
     ((Lib3dsDword)b[1] << 8) |
     ((Lib3dsDword)b[0]);
-  return(*((Lib3dsFloat*)&d));
+  memcpy(&ret, &d, sizeof(ret));
+  return ret;
 }
 
 
@@ -462,7 +464,7 @@
   Lib3dsDword d;
 
   ASSERT(io);
-  d=*((Lib3dsDword*)&l);
+  memcpy(&d, &l, sizeof(d));
   b[3]=(Lib3dsByte)(((Lib3dsDword)d & 0xFF000000) >> 24);
   b[2]=(Lib3dsByte)(((Lib3dsDword)d & 0x00FF0000) >> 16);
   b[1]=(Lib3dsByte)(((Lib3dsDword)d & 0x0000FF00) >> 8);