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authorDoug Kwan <dougkwan@google.com>2011-08-08 22:08:35 -0700
committerDoug Kwan <dougkwan@google.com>2011-10-13 09:53:54 -0700
commit8c3968245a0d0f015dcc0fb6b39fbec42c608ea1 (patch)
tree03805668ba4893f93020c84ed4829dc56c826f8c /bcmdhd/dhdutil
parentf6ad682cfc4444f0d7d31613d9fe76d8f05a3fa4 (diff)
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Fix undefined behaviour in C. This patch uses offsetof() macro defined in
the C specs instead of using a macro which dereferences a null pointer. The offsetof() macro is available since C89. Change-Id: I62b9b1d726dd0c3a956bdc4ae4cdd5db3dc55040
Diffstat (limited to 'bcmdhd/dhdutil')
-rw-r--r--bcmdhd/dhdutil/include/bcmutils.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/bcmdhd/dhdutil/include/bcmutils.h b/bcmdhd/dhdutil/include/bcmutils.h
index f08fe56..3b823a1 100644
--- a/bcmdhd/dhdutil/include/bcmutils.h
+++ b/bcmdhd/dhdutil/include/bcmutils.h
@@ -22,6 +22,8 @@
#ifndef _bcmutils_h_
#define _bcmutils_h_
+#include <stddef.h>
+
#define bcm_strcpy_s(dst, noOfElements, src) strcpy((dst), (src))
#define bcm_strncpy_s(dst, noOfElements, src, count) strncpy((dst), (src), (count))
#define bcm_strcat_s(dst, noOfElements, src) strcat((dst), (src))
@@ -527,7 +529,7 @@ extern int bcm_format_ssid(char* buf, const uchar ssid[], uint ssid_len);
#define ISPOWEROF2(x) ((((x)-1)&(x)) == 0)
#define VALID_MASK(mask) !((mask) & ((mask) + 1))
#ifndef OFFSETOF
-#define OFFSETOF(type, member) ((uint)(uintptr)&((type *)0)->member)
+#define OFFSETOF(type, member) ((uint)offsetof(type, member))
#endif
#ifndef ARRAYSIZE
#define ARRAYSIZE(a) (sizeof(a)/sizeof(a[0]))