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fix alloc bug

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This commit is contained in:
Kevin Trogant 2025-12-06 01:04:14 +01:00
parent 6fc645c9d2
commit 3a4af168b1
1 changed files with 2 additions and 2 deletions
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4
rtcore.h
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@ -293,7 +293,7 @@ RTC_API void *
ArenaAlloc(arena *a, isize size, isize align, isize n, int flags) ArenaAlloc(arena *a, isize size, isize align, isize n, int flags)
{ {
isize padding = -(usize)a->begin & (align - 1); isize padding = -(usize)a->begin & (align - 1);
isize available = a->end - a->begin - padding; isize available = (isize)(a->end - a->begin) - padding;
if (available < 0 || n > available / size) if (available < 0 || n > available / size)
{ {
if (!(flags & ALLOC_SOFTFAIL)) if (!(flags & ALLOC_SOFTFAIL))
@ -301,7 +301,7 @@ ArenaAlloc(arena *a, isize size, isize align, isize n, int flags)
return NULL; return NULL;
} }
void *p = a->begin + padding; void *p = a->begin + padding;
a->begin += padding - n * size; a->begin += padding + n * size;
return (flags & ALLOC_NOZERO) ? p : memset(p, 0, n * size); return (flags & ALLOC_NOZERO) ? p : memset(p, 0, n * size);
} }