1 | #ifndef _SYS_CDEFS_H |
2 | |
3 | /* This is outside of _ISOMAC to enforce that _Static_assert always |
4 | uses the two-argument form. This can be removed once the minimum |
5 | GCC version used to compile glibc is GCC 9.1. */ |
6 | #ifndef __cplusplus |
7 | # define _Static_assert(expr, diagnostic) _Static_assert (expr, diagnostic) |
8 | #endif |
9 | |
10 | #include <misc/sys/cdefs.h> |
11 | |
12 | #ifndef _ISOMAC |
13 | /* The compiler will optimize based on the knowledge the parameter is |
14 | not NULL. This will omit tests. A robust implementation cannot allow |
15 | this so when compiling glibc itself we ignore this attribute. */ |
16 | # undef __nonnull |
17 | # define __nonnull(params) |
18 | |
19 | extern void __chk_fail (void) __attribute__ ((__noreturn__)); |
20 | libc_hidden_proto (__chk_fail) |
21 | rtld_hidden_proto (__chk_fail) |
22 | |
23 | /* If we are using redirects internally to support long double, |
24 | we need to tweak some macros to ensure the PLT bypass tricks |
25 | continue to work in libc. */ |
26 | #if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 && IS_IN (libc) && defined SHARED |
27 | |
28 | # undef __LDBL_REDIR_DECL |
29 | # define __LDBL_REDIR_DECL(func) \ |
30 | extern __typeof(func) func __asm (__ASMNAME ("__GI____ieee128_" #func)); |
31 | |
32 | # undef libc_hidden_ldbl_proto |
33 | # define libc_hidden_ldbl_proto(func, attrs...) \ |
34 | extern __typeof(func) ___ieee128_ ## func; \ |
35 | libc_hidden_proto (___ieee128_ ## func, ##attrs); |
36 | |
37 | # undef __LDBL_REDIR2_DECL |
38 | # define __LDBL_REDIR2_DECL(func) \ |
39 | extern __typeof(__ ## func) __ ## func __asm (__ASMNAME ("__GI____ieee128___" #func)); |
40 | |
41 | #endif |
42 | |
43 | #if defined SHARED |
44 | #if IS_IN (libc) && __USE_FORTIFY_LEVEL > 0 && defined __fortify_function |
45 | |
46 | #undef __REDIRECT_FORTIFY |
47 | #define __REDIRECT_FORTIFY(name, proto, alias) \ |
48 | __REDIRECT(name, proto, __GI_##alias) |
49 | |
50 | #undef __REDIRECT_FORTIFY_NTH |
51 | #define __REDIRECT_FORTIFY_NTH(name, proto, alias) \ |
52 | __REDIRECT_NTH(name, proto, __GI_##alias) |
53 | |
54 | #endif |
55 | #endif /* defined SHARED */ |
56 | |
57 | #endif /* !defined _ISOMAC */ |
58 | |
59 | #endif |
60 | |