Fix sparc64 build with GCC 9 [committed]
Commit Message
Similar to the x86_64 and armv7 build issues, glibc fails to build for
sparc64 with current mainline GCC because of aliases declared in the
course of defining IFUNCs, which copy their attributes from a header
declaration, ending up with fewer attributes than the (built-in)
string function they alias. This patch fixes the issue similarly to
the fixes for those other architectures.
Tested with build-many-glibcs.py compilers build for
sparc64-linux-gnu. Committed.
2018-11-13 Joseph Myers <joseph@codesourcery.com>
* sysdeps/sparc/sparc-ifunc.h [SHARED]
(sparc_ifunc_redirected_hidden_def): Use __attribute_copy__ to
copy attributes from name.
Comments
From: Joseph Myers <joseph@codesourcery.com>
Date: Tue, 13 Nov 2018 00:27:41 +0000
> Similar to the x86_64 and armv7 build issues, glibc fails to build for
> sparc64 with current mainline GCC because of aliases declared in the
> course of defining IFUNCs, which copy their attributes from a header
> declaration, ending up with fewer attributes than the (built-in)
> string function they alias. This patch fixes the issue similarly to
> the fixes for those other architectures.
>
> Tested with build-many-glibcs.py compilers build for
> sparc64-linux-gnu. Committed.
Thank you.
@@ -35,7 +35,8 @@
#if defined SHARED
# define sparc_ifunc_redirected_hidden_def(redirect_name, name) \
__hidden_ver1 (name, __GI_##name, redirect_name) \
- __attribute__ ((visibility ("hidden")));
+ __attribute__ ((visibility ("hidden"))) \
+ __attribute_copy__ (name);
#else
# define sparc_ifunc_redirected_hidden_def(redirect_name, name)
#endif