Use __alignof__ instead of assuming int64_t to get the right

alignment.

Differential Revision: https://reviews.freebsd.org/D4708

1 files changed, 1 insertions, 10 deletions

diff --git a/lib/libc/stdio/findfp.c b/lib/libc/stdio/findfp.c
index 6a68958..5e1f069 100644
--- a/lib/libc/stdio/findfp.c
+++ b/lib/libc/stdio/findfp.c
@@ -99,16 +99,7 @@ moreglue(int n)
 	FILE *p;
 	size_t align;
 
-	/*
-	 * FILE has a mbstate_t variable. This variable tries to be int64_t
-	 * aligned through its definition. int64_t may be larger than void *,
-	 * which is the size traditionally used for ALIGNBYTES.  So, use our own
-	 * rounding instead of the MI ALIGN macros. If for some reason
-	 * ALIGNBYTES is larger than int64_t, respect that too. There appears to
-	 * be no portable way to ask for FILE's alignment requirements other
-	 * than just knowing here.
-	 */
-	align = MAX(ALIGNBYTES, sizeof(int64_t));
+	align = __alignof__(FILE);
 	g = (struct glue *)malloc(sizeof(*g) + align + n * sizeof(FILE));
 	if (g == NULL)
 		return (NULL);