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fix use of mi_bsr

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daanx 2025-05-02 16:22:59 -07:00
parent 3c3d16fe48
commit 87bbcb6266
1 changed files with 3 additions and 3 deletions
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6
src/prim/unix/prim.c
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@ -72,7 +72,7 @@ terms of the MIT license. A copy of the license can be found in the file
#define MI_UNIX_LARGE_PAGE_SIZE (2*MI_MiB) // TODO: can we query the OS for this?
//------------------------------------------------------------------------------------
// Use syscalls for some primitives to allow for libraries that override open/read/close etc.
// and do allocation themselves; using syscalls prevents recursion when mimalloc is
@ -223,8 +223,8 @@ static void* unix_mmap_prim_aligned(void* addr, size_t size, size_t try_alignmen
void* p = NULL;
#if defined(MAP_ALIGNED) // BSD
if (addr == NULL && try_alignment > 1 && (try_alignment % _mi_os_page_size()) == 0) {
size_t idx;
size_t n = mi_bsr(try_alignment, &idx);
size_t n = 0;
mi_bsr(try_alignment, &n);
if (((size_t)1 << n) == try_alignment && n >= 12 && n <= 30) { // alignment is a power of 2 and 4096 <= alignment <= 1GiB
p = unix_mmap_prim(addr, size, protect_flags, flags | MAP_ALIGNED(n), fd);
if (p==MAP_FAILED || !_mi_is_aligned(p,try_alignment)) {