define MI_MAX_ALLOC_SIZE as PTRDIFF_MAX (related to #877)

2024-04-19 09:53:21 -07:00
parent 06b510c42d
commit 5050b63038
2 changed files with 3 additions and 1 deletions
--- a/include/mimalloc/types.h
+++ b/include/mimalloc/types.h
@@ -195,6 +195,8 @@ typedef int32_t  mi_ssize_t;
 // Alignments over MI_BLOCK_ALIGNMENT_MAX are allocated in dedicated huge page segments
 #define MI_BLOCK_ALIGNMENT_MAX   (MI_SEGMENT_SIZE >> 1)

+// we never allocate more than PTRDIFF_MAX (see also <https://sourceware.org/ml/libc-announce/2019/msg00001.html>)
+#define MI_MAX_ALLOC_SIZE   PTRDIFF_MAX

 // ------------------------------------------------------
 // Mimalloc pages contain allocated blocks