diff options
| author | pfg <pfg@FreeBSD.org> | 2014-05-02 16:15:34 +0000 |
|---|---|---|
| committer | pfg <pfg@FreeBSD.org> | 2014-05-02 16:15:34 +0000 |
| commit | fe39a82f7dee4ecb131650441b78922f154b21aa (patch) | |
| tree | 3a659cd40204d6bef00d733c819398479553155c /contrib/gcc | |
| parent | 2b33056fcc4e3ad36f38aeea211ae3d2d910c404 (diff) | |
| download | FreeBSD-src-fe39a82f7dee4ecb131650441b78922f154b21aa.zip FreeBSD-src-fe39a82f7dee4ecb131650441b78922f154b21aa.tar.gz | |
gcc: fix strict alignment.
From the OpenBSD log:
x86-64 ABI requires arrays greater than 16 bytes to be aligned to
16byte boundary. However, GCC 16-byte aligns arrays of >=16 BITS,
not BYTES.
This diff improves bug detectability for code which has local arrays
of [16 .. 127] bits: in those cases SSP will now detect even 1-byte
overflows.
Obtained from: OpenBSD (CVS rev 1.4)
MFC after: 1 week
Diffstat (limited to 'contrib/gcc')
| -rw-r--r-- | contrib/gcc/config/i386/i386.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/contrib/gcc/config/i386/i386.c b/contrib/gcc/config/i386/i386.c index 88f2836..26528bf 100644 --- a/contrib/gcc/config/i386/i386.c +++ b/contrib/gcc/config/i386/i386.c @@ -14408,7 +14408,7 @@ ix86_local_alignment (tree type, int align) if (AGGREGATE_TYPE_P (type) && TYPE_SIZE (type) && TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST - && (TREE_INT_CST_LOW (TYPE_SIZE (type)) >= 16 + && (TREE_INT_CST_LOW (TYPE_SIZE (type)) >= 128 || TREE_INT_CST_HIGH (TYPE_SIZE (type))) && align < 128) return 128; } |
