libc_hidden & weak_alias mechanism in vfork/clone/..

[Carlos O'Donell]

On 05/30/2018 07:30 PM, Waldemar Brodkorb wrote:
> Hello glibc hackers,
> 
> I would like to understand why GNU C Library is using a lot of weak
> aliases for C library functions like vfork or clone.
> 
> What is the reason for it?
> 
> Or in this case the assembly function name is __libc_vfork and
> __vfork and vfork is somehow involved.
> https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/riscv/vfork.S;h=6c53e93a928d736be73161954fd83bdb0672fd4f;hb=HEAD

Does this answer your question?

https://sourceware.org/glibc/wiki/Style_and_Conventions#Double-underscore_names_for_public_API_functions

Cheers,
Carlos.