[Bug libc/21029] glibc-2.23 (and later) fails to compile with -fno-omit-frame-pointer on i386

["adhemerval.zanella at linaro dot org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=21029

Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:

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                 CC|                            |adhemerval.zanella at linaro dot o
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--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
AFAIK it is not an issue because 'ebp' is this context is used on kernel ABI to
pass the 6th argument (the file sysdeps/unix/sysv/linux/i386/sysdep.h contains
a comment about the linux convention for i686).

Unless there is a compiler option to make easier to create syscall macros (so
compiler can restore ebp somehow), you will need to explict disable
-fno-omit-frame-pointer on these files.

Another option would to code this syscalls in asm, but I will advise against
since to make i386 to use the generic code is exactly to avoid the
proliferation of such implementations.

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