libc_hidden & weak_alias mechanism in vfork/clone/..

Waldemar Brodkorb
Wed May 30 23:32:00 GMT 2018

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.;a=blob;f=sysdeps/unix/sysv/linux/riscv/vfork.S;h=6c53e93a928d736be73161954fd83bdb0672fd4f;hb=HEAD

best regards

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