[Bug ld/29226] gcc -fcf-protection option causes GCC 12 gccgo build to fail : "failed to match split-stack sequence"

[jason.vas.dias at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29226

--- Comment #4 from Jason Vas Dias <jason.vas.dias at gmail dot com> ---
Oops, had not finished editing last line of previous comment:
gold/x86_64.c, line 6113 will become:
object->error(_("failed to match split-stack sequence at "
                        "section %u offset %0zx - r10:%c r11:%c fnsize: %u"),
                      shndx, static_cast<size_t>(fnoffset)
             , this->match_view(view, view_size, fnoffset,
                                lea_r10_insn, lea_r10_insn_len
                               ) ? '1' : '0'
             , this->match_view(view, view_size, fnoffset,
                                lea_r11_insn, lea_r11_insn_len
                               ) ? '1' : '0'
             , static_cast<uint32_t>(fnsize)
             );

With ld/gold augmented to print that under those circumstances, then we should
be a bit further forward in understanding what is going on here.

The fact that it strangely WORKS when run under the old binutils-2.35 using
gdb (I have not got round to building latest gdb yet, was going to do that
with GCC 12), DOES indicate something rather strange and subtle is going on
here.

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