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list: fix an issue with android build using clang 

Sorry, I don't understand the android build system enough to say *which*
version of clang this effects, but either "clang-2812033" or
"clang-3016494" (probably the later).

But when 'sample' is undefined (ie. unitialized variable), the result is
not as well defined as it is with gcc.  Instead use a typeof() cast with
a defined value (ie. zero).

This fixes a crash that was reported on android.

Reported-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Rob Clark <robclark@freedesktop.org>
main
Rob Clark 2016-08-02 16:16:02 -04:00
parent f19cd3a528
commit b214b05ccd
1 changed files with 1 additions and 1 deletions
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2
util_double_list.h
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@ -110,7 +110,7 @@ static inline void list_delinit(struct list_head *item)
#ifndef container_of #ifndef container_of
#define container_of(ptr, sample, member) \ #define container_of(ptr, sample, member) \
(void *)((char *)(ptr) \ (void *)((char *)(ptr) \
- ((char *)&(sample)->member - (char *)(sample))) - ((char *)&((typeof(sample))0)->member))
#endif #endif
#define LIST_FOR_EACH_ENTRY(pos, head, member) \ #define LIST_FOR_EACH_ENTRY(pos, head, member) \