[Bug target/78631] [Intel MPX] libmpxwrappers shared library leads to a non-bounds-preserving memcpy()

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78631

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Ilya Enkovich from comment #7)
> (In reply to H.J. Lu from comment #6)
> > -z bndplt is needed to call external functions with bounds.  But
> > it isn't needed for internal function calls.
> 
> That doesn't explain why we need a hack you propose. Code like 
> 
> void *fn1 (void *p) {
>   return fn2(p);
> }
> 
> should work fine for any fn1 and fn2 compiled with MPX. Both internal and
> external functions should work. If call goes through PLT then BNDPLT should
> be used. If it's not then it's a bug in toolchain.

MPX wrapper library doesn't call external functions with bounds
and there is no need to use PLT to call internal functions within
MPX wrapper library.