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include/stddef.h: define NULL only if undefined

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seyko 2015-10-25 00:19:12 +03:00
parent f3ce1be333
commit 12f94f2770
1 changed files with 3 additions and 0 deletions
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3
include/stddef.h
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@ -20,7 +20,10 @@ typedef unsigned int uint32_t;
typedef unsigned long long int uint64_t;
#endif
#ifndef NULL
#define NULL ((void*)0)
#endif
#define offsetof(type, field) ((size_t)&((type *)0)->field)
void *alloca(size_t size);