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| author | Yann Sionneau <ysionneau@kalray.eu> | 2021-08-17 22:09:53 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2021-08-25 14:14:02 +0200 |
| commit | 74b93e4d32633fc896ec61ca73b79f7d4725e2a3 (patch) | |
| tree | 250d77fa44602085227f5debc7d3227f00e6ee73 /include/sys/cdefs.h | |
| parent | 0894e879f091a6a281c02b8da1c0606f4f2dcfb8 (diff) | |
Fix warnings due to missing attributes for __EI_ prefixed symbols
With new compiler (gcc >= 9 ?) building uClibc-ng now gives this sort of warnings:
./include/libc-symbols.h:426:25: warning: '__EI_localeconv' specifies less restrictive attribute than its target 'localeconv': 'nothrow' [-Wmissing-attributes]
426 | extern __typeof (name) __EI_##name __attribute__((alias (__hidden_asmname1 (,#local))))
| ^~~~~
./include/libc-symbols.h:429:29: note: in expansion of macro '__hidden_ver1'
429 | # define hidden_def(name) __hidden_ver1(__GI_##name, name, name);
| ^~~~~~~~~~~~~
./include/libc-symbols.h:497:32: note: in expansion of macro 'hidden_def'
497 | # define libc_hidden_def(name) hidden_def (name)
| ^~~~~~~~~~
libc/misc/locale/locale.c:306:1: note: in expansion of macro 'libc_hidden_def'
306 | libc_hidden_def(localeconv)
| ^~~~~~~~~~~~~~~
In file included from libc/misc/locale/localeconv.c:8:
libc/misc/locale/locale.c:261:15: note: '__EI_localeconv' target declared here
261 | struct lconv *localeconv(void)
| ^~~~~~~~~~
The fix is mostly being backported/adapted from glibc.
Diffstat (limited to 'include/sys/cdefs.h')
| -rw-r--r-- | include/sys/cdefs.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h index a4359a05c..5c4daebcd 100644 --- a/include/sys/cdefs.h +++ b/include/sys/cdefs.h @@ -330,6 +330,17 @@ # endif #endif +/* Undefine (also defined in libc-symbols.h). */ +#undef __attribute_copy__ +#if __GNUC_PREREQ (9, 0) +/* Copies attributes from the declaration or type referenced by + the argument. */ +# define __attribute_copy__(arg) __attribute__ ((__copy__ (arg))) +#else +# define __attribute_copy__(arg) +#endif + + /* GCC 4.3 and above allow passing all anonymous arguments of an __extern_always_inline function to some other vararg function. */ #if __GNUC_PREREQ (4,3) |