https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #11 from Hans-Peter Nilsson ---
(In reply to Hans-Peter Nilsson from comment #0)
> (Note: no cross-binutils or anything needed, just gcc sources and a native
> gcc-4.4. This is an *old* installation which identifies itself as "gcc
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #10 from Hans-Peter Nilsson ---
(In reply to Abrahm Scully from comment #9)
> Either way, building gcc-4.7.4 first and then building gcc-10 with that
> produces a compiler without the problem.
>
> Again, sorry for the noise.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #9 from Abrahm Scully ---
I'm no longer convinced that I didn't see the problem previously because I just
wasn't running the tests. Stage 1 has checking enabled... so I don't know why
this problem showed up for others in gcc 9 but
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #8 from Abrahm Scully ---
I don't think anything is wrong with gcc-10-20200329. The code looks fine.
I realized later that the versions of gcc I mentioned where I don't see this
problem are all from release branches. As described in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #7 from Abrahm Scully ---
I hit an ICE today that looks like this bug. I attempted to build
gcc-10-20200329 on 32-bit CentOS 6 using g++ 4.4.7-23.el6. I don't see this bug
building gcc-6.3, gcc-7.3, gcc-8.3, or gcc-9-20200118 on the
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #6 from David Malcolm ---
...though my understanding is that an automatic local's storage is deallocated
at the end of the enclosing code block - presumably that's when the dtor is
meant to run, and not before.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #5 from David Malcolm ---
Possibly due to lifetime issues: perhaps the on-stack text_range_label's dtor
is being called (and thus trashing updating the vtable ptr) before the object
gets used.
(see e.g.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #4 from David Malcolm ---
Looks like it's crashing on a virtual function call, within the code I added in
r263564.
It says "pure virtual method called", but it's calling it on an instance of
text_range_label (on the stack), which
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #3 from Andrew Pinski ---
Maybe related to PR 87134. There might be more of these issues floating in GCC
code where GCC 4.4 does not implement the C++11 sematics of initializing.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #2 from Andrew Pinski ---
Should have been fixed via
https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01996.html .
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87252
--- Comment #1 from Andrew Pinski ---
https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01891.html
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