[PATCH 2/2] Ensure constness of target pointer type
From: Jan Blunck <hidden>
Date: 2017-02-14 14:36:18
Subsystem:
library code, the rest · Maintainers:
Andrew Morton, Linus Torvalds
This adds a check to ensure that the container_of() macro is not used to cast away (remove) constness. Signed-off-by: Jan Blunck <redacted> --- lib/librte_eal/common/include/rte_common.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index c421708..e057f6e 100644
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h@@ -348,6 +348,8 @@ rte_bsf32(uint32_t v) #ifndef container_of #define container_of(ptr, type, member) __extension__ ({ \ const typeof(((type *)0)->member) *_ptr = (ptr); \ + __attribute__((unused)) type *_target_ptr = \ + (type *)(ptr); \ (type *)(((uintptr_t)_ptr) - offsetof(type, member)); \ }) #endif
--
2.7.4