Added: M_MemDup() for taking a copy of memory buffer

doomsday/engine/portable/include/m_misc.h

@@ -41,6 +41,7 @@
 void*           M_Malloc(size_t size);
 void*           M_Calloc(size_t size);
 void*           M_Realloc(void* ptr, size_t size);
+void*           M_MemDup(const void* ptr, size_t size);
 void            M_Free(void* ptr);
 
 // File system utility routines.

doomsday/engine/portable/src/gl_defer.c

@@ -30,6 +30,7 @@
 #include "de_console.h"
 #include "de_system.h"
 #include "de_graphics.h"
+#include "m_misc.h"
 
 #include "texturecontent.h"
 
@@ -149,8 +150,7 @@ LIBDENG_GL_DEFER2(uintArray, GLsizei s, const GLuint* v)
     apifunc_t* api = malloc(sizeof(apifunc_t));
     api->func.ptr_uintArray = ptr;
     api->param.uintArray.count = s;
-    api->param.uintArray.values = malloc(sizeof(GLuint) * s);
-    memcpy(api->param.uintArray.values, v, sizeof(GLuint) * s);
+    api->param.uintArray.values = M_MemDup(v, sizeof(GLuint) * s);
     enqueueTask(DTT_FUNC_PTR_UINT_ARRAY, api);
 }
 

doomsday/engine/portable/src/m_misc.c

@@ -94,6 +94,13 @@ void *M_Realloc(void *ptr, size_t size)
     return realloc(ptr, size);
 }
 
+void* M_MemDup(const void* ptr, size_t size)
+{
+    void* copy = M_Malloc(size);
+    memcpy(copy, ptr, size);
+    return copy;
+}
+
 void M_Free(void *ptr)
 {
     free(ptr);