Re: OpenImageIO GCC 8 build problem?

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On Sat, 10 Feb 2018, Richard Shaw wrote:

A scratch build works fine on Fedora 27...

Error during build[1]:
*** WARNING *** there are active plugins, do not report this as a bug unless
you can reproduce it without enabling any plugins.
Event                            | Plugins
PLUGIN_FINISH_UNIT               | annobin: Generate final annotations
PLUGIN_START_UNIT                | annobin: Generate global annotations
PLUGIN_ALL_PASSES_END            | annobin: Generate per-function
annotations
In file included from/builddir/build/BUILD/oiio-Release-1.8.8/src/include/OpenImageIO/imageio.h:
59,
                 from/builddir/build/BUILD/oiio-Release-1.8.8/src/include/OpenImageIO/imagebuf.h
:46,
                 from/builddir/build/BUILD/oiio-Release-1.8.8/src/libOpenImageIO/imagebufalgo_co
mpare.cpp:41:
/builddir/build/BUILD/oiio-Release-1.8.8/src/libOpenImageIO/imagebufalgo_co
mpare.cpp: In instantiation of 'bool OpenImageIO_v1_8::color_count_(const
OpenImageIO_v1_8::ImageBuf&, OpenImageIO_v1_8::atomic_ll*, int, const
float*, const float*, OpenImageIO_v1_8::ROI, int) [with T = float;
OpenImageIO_v1_8::atomic_ll = std::atomic<long long int>]':
/builddir/build/BUILD/oiio-Release-1.8.8/src/libOpenImageIO/imagebufalgo_co
mpare.cpp:546:5:   required from here
/builddir/build/BUILD/oiio-Release-1.8.8/src/include/OpenImageIO/platform.h
:191:36: internal compiler error: in maybe_undo_parenthesized_ref, at
cp/semantics.c:1736
 #define ALLOCA(type, size) ((size) != 0 ? ((type*)alloca((size) * sizeof
(type))) : nullptr)
                             ~~~~~~~^~~~
/builddir/build/BUILD/oiio-Release-1.8.8/src/libOpenImageIO/imagebufalgo_co
mpare.cpp:501:24: note: in expansion of macro 'ALLOCA'
         long long *n = ALLOCA (long long, ncolors);
                        ^~~~~~

As it says "internal compiler error" it is clearly a bug in gcc8 or in
annobin, and either way it should be reported in Bugzilla.

	Michael Young
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