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| author | Arnold D. Robbins <arnold@skeeve.com> | 2021-08-29 18:53:55 +0300 |
|---|---|---|
| committer | Arnold D. Robbins <arnold@skeeve.com> | 2021-08-29 18:53:55 +0300 |
| commit | 0e1761697d8ed24b07cf23035f5dd01d09056e3a (patch) | |
| tree | 0bfa58691f81e87f3098d736bc0409c4dd5fc40c /support/cdefs.h | |
| parent | 6696453c1a733436cbb9ca41c7c75eeb4e0b428a (diff) | |
| download | egawk-0e1761697d8ed24b07cf23035f5dd01d09056e3a.tar.gz egawk-0e1761697d8ed24b07cf23035f5dd01d09056e3a.tar.bz2 egawk-0e1761697d8ed24b07cf23035f5dd01d09056e3a.zip | |
Sync support with GNULIB updates.
Diffstat (limited to 'support/cdefs.h')
| -rw-r--r-- | support/cdefs.h | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/support/cdefs.h b/support/cdefs.h index b883b256..4dac9d26 100644 --- a/support/cdefs.h +++ b/support/cdefs.h @@ -261,10 +261,6 @@ #if __GNUC_PREREQ (2,7) || __glibc_has_attribute (__unused__) # define __attribute_maybe_unused__ __attribute__ ((__unused__)) -/* Once the next version of the C standard comes out, we can - do something like the following here: - #elif defined __STDC_VERSION__ && 202???L <= __STDC_VERSION__ - # define __attribute_maybe_unused__ [[__maybe_unused__]] */ #else # define __attribute_maybe_unused__ /* Ignore */ #endif @@ -336,6 +332,16 @@ # define __nonnull(params) __attribute_nonnull__ (params) #endif +/* The returns_nonnull function attribute marks the return type of the function + as always being non-null. */ +#ifndef __returns_nonnull +# if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__returns_nonnull__) +# define __returns_nonnull __attribute__ ((__returns_nonnull__)) +# else +# define __returns_nonnull +# endif +#endif + /* If fortification mode, we warn about unused results of certain function calls which can lead to problems. */ #if __GNUC_PREREQ (3,4) || __glibc_has_attribute (__warn_unused_result__) @@ -598,9 +604,26 @@ _Static_assert (0, "IEEE 128-bits long double requires redirection on this platf array according to access mode, or at least one element when size-index is not provided: access (access-mode, <ref-index> [, <size-index>]) */ -#define __attr_access(x) __attribute__ ((__access__ x)) +# define __attr_access(x) __attribute__ ((__access__ x)) +# if __GNUC_PREREQ (11, 0) +# define __attr_access_none(argno) __attribute__ ((__access__ (__none__, argno))) +# else +# define __attr_access_none(argno) +# endif #else # define __attr_access(x) +# define __attr_access_none(argno) +#endif + +#if __GNUC_PREREQ (11, 0) +/* Designates dealloc as a function to call to deallocate objects + allocated by the declared function. */ +# define __attr_dealloc(dealloc, argno) \ + __attribute__ ((__malloc__ (dealloc, argno))) +# define __attr_dealloc_free __attr_dealloc (__builtin_free, 1) +#else +# define __attr_dealloc(dealloc, argno) +# define __attr_dealloc_free #endif /* Specify that a function such as setjmp or vfork may return |