antithread: avoid arithmetic on void pointers
[ccan] / ccan / antithread / antithread.c
index 61b288a36bc11c61a6853d076b4f1b5d06c3f95f..da607c1e7b28cd15a07bad97c95805349c863a65 100644 (file)
@@ -193,7 +193,7 @@ struct at_pool *at_pool(unsigned long size)
 
        /* Then we remap into the middle of it. */
        munmap(p->pool, size+PADDING);
-       p->pool = mmap(p->pool + PADDING/2, size, PROT_READ|PROT_WRITE,
+       p->pool = mmap((char *)p->pool + PADDING/2, size, PROT_READ|PROT_WRITE,
                       MAP_SHARED, fd, 0);
        if (p->pool == MAP_FAILED)
                goto fail_free;