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[libc] Allow container_of() to be used on volatile pointers

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2016-03-18 08:18:31 +00:00
parent 04ef198d2f
commit ef0297b527
1 changed files with 1 additions and 1 deletions
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src/include/stddef.h
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@@ -34,7 +34,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
*/ */
#define container_of( ptr, type, field ) ( { \ #define container_of( ptr, type, field ) ( { \
type *__container; \ type *__container; \
const typeof ( __container->field ) *__field = (ptr); \ const volatile typeof ( __container->field ) *__field = (ptr); \
__container = ( ( ( void * ) __field ) - \ __container = ( ( ( void * ) __field ) - \
offsetof ( type, field ) ); \ offsetof ( type, field ) ); \
__container; } ) __container; } )