Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 948071 - =media-libs/opencv-4.10.0 fails with =gcc-15.0.0_pre20250112 using -O2/-ftree-loop-vectorize: memory_descriptor_ref.cpp:94:19: internal compiler error: in exact_div, at poly-int.h:2160
Summary: =media-libs/opencv-4.10.0 fails with =gcc-15.0.0_pre20250112 using -O2/-ftre...
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal
Assignee: Gentoo Toolchain Maintainers
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: gcc-15
  Show dependency tree
 
Reported: 2025-01-14 03:46 UTC by tdr
Modified: 2025-01-24 03:30 UTC (History)
3 users (show)

See Also:
Package list:
Runtime testing required: ---


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description tdr 2025-01-14 03:46:06 UTC
using =gcc-15.0.0_pre20250112 to build =media-libs/opencv-4.10.0 produces ICE if optimized at >=-O2

Reproducible: Always

Actual Results:  
during GIMPLE pass: vect
/var/tmp/portage/media-libs/opencv-4.10.0/work/opencv-4.10.0_build-abi_x86_64.amd64-python3_12/3rdparty/ade/ade-0.1.2d/sources/ade/source/memory_descriptor_ref.cpp: In member function ‘ade::memory::DynMdSpan ade::MemoryDescriptorRef::originSpan() const’:
/var/tmp/portage/media-libs/opencv-4.10.0/work/opencv-4.10.0_build-abi_x86_64.amd64-python3_12/3rdparty/ade/ade-0.1.2d/sources/ade/source/memory_descriptor_ref.cpp:94:19: internal compiler error: in exact_div, at poly-int.h:2160
   94 | memory::DynMdSpan MemoryDescriptorRef::originSpan() const
      |                   ^~~~~~~~~~~~~~~~~~~
0x557df1d45f8b internal_error(char const*, ...)
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/diagnostic-global-context.cc:517
0x557def55449f fancy_abort(char const*, int, char const*)
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/diagnostic.cc:1722
0x557def5080cf poly_int<1u, poly_result<unsigned long, if_nonpoly<int, int, poly_int_traits<int>::is_poly>::type, poly_coeff_pair_traits<unsigned long, if_nonpoly<int, int, poly_int_traits<int>::is_poly>::type>::result_kind>::type> exact_div<1u, unsigned long, int>(poly_int<1u, unsigned long> const&, int)
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/poly-int.h:2160
0x557def5080cf vect_compute_data_ref_alignment
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/tree-vect-data-refs.cc:1365
0x557df1c20bee vect_analyze_data_refs_alignment(_loop_vec_info*)
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/tree-vect-data-refs.cc:2946
0x557df05dd0eb vect_analyze_loop_2
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/tree-vect-loop.cc:2959
0x557df05df562 vect_analyze_loop_1
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/tree-vect-loop.cc:3478
0x557df05dfe6b vect_analyze_loop(loop*, gimple*, vec_info_shared*)
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/tree-vect-loop.cc:3638
0x557df06492ba try_vectorize_loop_1
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/tree-vectorizer.cc:1093
0x557df06492ba try_vectorize_loop
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/tree-vectorizer.cc:1210
0x557df0649cd0 execute
	/usr/src/debug/sys-devel/gcc-15.0.0_pre20250112/gcc-15-20250112/gcc/tree-vectorizer.cc:1326
Please submit a full bug report, with preprocessed source (by using -freport-bug).
Please include the complete backtrace with any bug report.



local env allows to successfully with:

    CXXFLAGS="${COMMON_FLAGS} -fno-tree-vectorize"

as an alternative, using -O1 for the opencv will also work
Comment 1 Larry the Git Cow gentoo-dev 2025-01-24 03:30:18 UTC
The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=067920105bbfc2ab7ecb994c1079432524c521df

commit 067920105bbfc2ab7ecb994c1079432524c521df
Author:     Sam James <sam@gentoo.org>
AuthorDate: 2025-01-24 03:26:55 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2025-01-24 03:27:23 +0000

    media-libs/opencv: add -fno-tree-loop-vectorize for gcc trunk
    
    Temporary workaround.
    
    Bug: https://gcc.gnu.org/PR118464
    Closes: https://bugs.gentoo.org/948071
    Signed-off-by: Sam James <sam@gentoo.org>

 media-libs/opencv/opencv-4.10.0.ebuild | 5 +++++
 1 file changed, 5 insertions(+)