banned.h: mark sprintf() as banned
[git/git.git] / banned.h
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c8af66ab
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1#ifndef BANNED_H
2#define BANNED_H
3
4/*
5 * This header lists functions that have been banned from our code base,
6 * because they're too easy to misuse (and even if used correctly,
7 * complicate audits). Including this header turns them into compile-time
8 * errors.
9 */
10
11#define BANNED(func) sorry_##func##_is_a_banned_function
12
13#undef strcpy
14#define strcpy(x,y) BANNED(strcpy)
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15#undef strcat
16#define strcat(x,y) BANNED(strcat)
c8af66ab 17
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18#undef sprintf
19#undef vsprintf
20#ifdef HAVE_VARIADIC_MACROS
21#define sprintf(...) BANNED(sprintf)
22#define vsprintf(...) BANNED(vsprintf)
23#else
24#define sprintf(buf,fmt,arg) BANNED(sprintf)
25#define vsprintf(buf,fmt,arg) BANNED(sprintf)
26#endif
27
c8af66ab 28#endif /* BANNED_H */