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Fixed issue with Z_Realloc not guarenteeing 0-filled memory (due to alignment).

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Spike 2018-06-28 05:32:43 +01:00
parent 50a7b25833
commit 0b796bdfe4
1 changed files with 6 additions and 0 deletions
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6
quakespasm/Quake/zone.c
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@ -237,6 +237,12 @@ void *Z_Realloc(void *ptr, int size)
if (!ptr) if (!ptr)
Sys_Error ("Z_Realloc: failed on allocation of %i bytes", size); Sys_Error ("Z_Realloc: failed on allocation of %i bytes", size);
//Spike -- fix a bug where alignment resulted in no 0-initialisation
block = (memblock_t *) ((byte *) ptr - sizeof (memblock_t));
size = block->size;
size -= (4 + (int)sizeof(memblock_t)); /* see Z_TagMalloc() */
//Spike -- end fix
if (ptr != old_ptr) if (ptr != old_ptr)
memmove (ptr, old_ptr, q_min(old_size, size)); memmove (ptr, old_ptr, q_min(old_size, size));
if (old_size < size) if (old_size < size)