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engine: use GCC provided offsetof implementation

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This commit is contained in:
Alibek Omarov
2021-10-03 04:26:22 +03:00
parent 8bbd0d5119
commit 08c04200fb
4 changed files with 12 additions and 8 deletions
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engine/client/mod_dbghulls.c
+4 -4
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@@ -17,7 +17,7 @@ GNU General Public License for more details.
#include "mod_local.h"
#include "xash3d_mathlib.h"
#include "world.h"
#include "eiface.h" // offsetof
#define MAX_CLIPNODE_DEPTH 256 // should never exceeds
@@ -67,7 +67,7 @@ _inline void list_del( hullnode_t *entry )
static winding_t * winding_alloc( uint numpoints )
{
return (winding_t *)malloc( (int)((winding_t *)0)->p[numpoints] );
return (winding_t *)malloc( offsetof( winding_t, p[numpoints] ) );
}
static void free_winding( winding_t *w )
@@ -84,7 +84,7 @@ static winding_t *winding_copy( winding_t *w )
winding_t *neww;
neww = winding_alloc( w->numpoints );
memcpy( neww, w, (int)((winding_t *)0)->p[w->numpoints] );
memcpy( neww, w, offsetof( winding_t, p[w->numpoints] ) );
return neww;
}
@@ -111,7 +111,7 @@ static void winding_reverse( winding_t *w )
static winding_t *winding_shrink( winding_t *w )
{
winding_t *neww = winding_alloc( w->numpoints );
memcpy( neww, w, (int)((winding_t *)0)->p[w->numpoints] );
memcpy( neww, w, offsetof( winding_t, p[w->numpoints] ));
free_winding( w );
return neww;