disable MADV_FREE usage in mallocng

[musl] / src / malloc / mallocng / free.c

diff --git a/src/malloc/mallocng/free.c b/src/malloc/mallocng/free.c
index 418a085..43f32aa 100644 (file)
--- a/src/malloc/mallocng/free.c
+++ b/src/malloc/mallocng/free.c
@@ -119,7 +119,7 @@ void free(void *p)
        if (((uintptr_t)(start-1) ^ (uintptr_t)end) >= 2*PGSZ && g->last_idx) {
                unsigned char *base = start + (-(uintptr_t)start & (PGSZ-1));
                size_t len = (end-base) & -PGSZ;
-               if (len) {
+               if (len && USE_MADV_FREE) {
                        int e = errno;
                        madvise(base, len, MADV_FREE);
                        errno = e;