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[Bug dynamic-link/21041] IFUNC setjmp/longjmp in libpthread.so are unsafe


https://sourceware.org/bugzilla/show_bug.cgi?id=21041

--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 9762
  --> https://sourceware.org/bugzilla/attachment.cgi?id=9762&action=edit
A script to check versions of IFUNC symbols in libpthread.so and libc.so

We can remove the IFUNC symbols in libpthread.so if those
symbols in libc.so have the same versions in libc.so and
another symbol in libpthread.so has the same version so that
removing the IFUNC symbols in libpthread.so won't change
version dependencies for libc.so and libpthread.so.  Here
is the script to check them.

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