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malloc: Remove use of __curbrk

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Remove an odd use of __curbrk and use MORECORE (0) instead.
This fixes Hurd build since it doesn't define this symbol.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Wilco Dijkstra
2025-08-08 13:59:31 +00:00
parent fd9ffafc0e
commit 94ebcfc4f2
1 changed files with 3 additions and 5 deletions
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8
malloc/malloc.c
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@@ -2642,13 +2642,11 @@ sysmalloc (INTERNAL_SIZE_T nb, mstate av)
previous calls. Otherwise, we correct to page-align below.
*/
/* Defined in brk.c. */
extern void *__curbrk;
if (__glibc_unlikely (mp_.thp_pagesize != 0))
{
uintptr_t top = ALIGN_UP ((uintptr_t) __curbrk + size,
mp_.thp_pagesize);
size = top - (uintptr_t) __curbrk;
uintptr_t lastbrk = (uintptr_t) MORECORE (0);
uintptr_t top = ALIGN_UP (lastbrk + size, mp_.thp_pagesize);
size = top - lastbrk;
}
else
size = ALIGN_UP (size, GLRO(dl_pagesize));