From 6646de02148cecdc1b97a999b10eaa930d9cfca5 Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Mon, 26 Apr 2010 14:25:33 +0200 Subject: [PATCH] dnsd: fix unaligned access problem Signed-off-by: Denys Vlasenko --- networking/dnsd.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/networking/dnsd.c b/networking/dnsd.c index c76a54f9e..1a99040ac 100644 --- a/networking/dnsd.c +++ b/networking/dnsd.c @@ -44,10 +44,15 @@ struct dns_head { uint16_t nauth; uint16_t nadd; }; +/* Structure used to access type and class fields. + * They are totally unaligned, but gcc 4.3.4 thinks that pointer of type uint16_t* + * is 16-bit aligned and replaces 16-bit memcpy (in move_from_unaligned16 macro) + * with aligned halfword access on arm920t! + * Oh well. Slapping PACKED everywhere seems to help: */ struct type_and_class { - uint16_t type; - uint16_t class; -}; + uint16_t type PACKED; + uint16_t class PACKED; +} PACKED; /* element of known name, ip address and reversed ip address */ struct dns_entry { struct dns_entry *next; -- 2.25.1