Avoid a Coverity positive.

2022-07-26 13:05:46 -06:00
parent 6c9b3c7613
commit 23ab31fce0
1 changed files with 3 additions and 3 deletions
--- a/lib/util/mmap_alloc.c
+++ b/lib/util/mmap_alloc.c
@@ -147,11 +147,11 @@ void
 sudo_mmap_free_v1(void *ptr)
 {
    if (ptr != NULL) {
-	unsigned long *ulp = ptr;
-	const unsigned long size = ulp[-1];
+	unsigned long *ulp = (unsigned long *)ptr - 1;
+	const unsigned long size = ulp[0];
 	int saved_errno = errno;

-	(void)munmap((void *)&ulp[-1], size);
+	(void)munmap((void *)ulp, size);
 	errno = saved_errno;
    }
 }