Hi,

Thanks for your reply. I'll read the GitHub issue and update the test.

Kind regards,
Takahiro Kawashima,
Fujitsu

> Thanks for the report. There is also an LLVM issue tracking this. I commented 
> there: 
> https://github.com/llvm/llvm-project/issues/157763#issuecomment-3273773003
> 
> The test is violating F2023 C15121 that is not properly enforced by flang 
> semantics but that lowering now relies on.
> Although we will likely improve LEN lowering which would have the side effect 
> of working around the segfault in the specific case of 0727_0008, I think we 
> will enforce C15121 in a manner that will reject it.
> 
> See The LLVM link for more details and suggestion on how to fix the test.
> 
> Jean Perier
> 
> -----Original Message-----
> From: [email protected] <[email protected]>
> Sent: Wednesday, September 10, 2025 6:12 AM
> To: [email protected]; [email protected]; 
> [email protected]
> Cc: [email protected]; Jean Perier <[email protected]>
> Subject: [Linaro-TCWG-CI] llvmorg-22-init-6821-ga103b9b207f6: 1 regression on 
> aarch64
> 
> [You don't often get email from [email protected]. Learn why this is 
> important at https://aka.ms/LearnAboutSenderIdentification ]
> 
> External email: Use caution opening links or attachments
> 
> 
> Dear contributor,
> 
> Our automatic CI has detected problems related to your patch(es). Please find 
> some details below.
> 
> In tcwg_flang_test/main-aarch64-O0-debug, after:
>   | commit llvmorg-22-init-6821-ga103b9b207f6
>   | Author: jeanPerier <[email protected]>
>   | Date:   Mon Sep 8 12:07:37 2025 +0200
>   |
>   |     [flang][lowering] fix vector subscripts in character elemental 
> procedures (#156661)
>   |
>   |     Fixes https://github.com/llvm/llvm-project/issues/145151
>   |
>   |     Character elemental procedures require evaluating the result
>   | ... 22 lines of the commit log omitted.
> 
> Produces 1 regression:
>   |
>   | regressions.sum:
>   | Running test-suite:Fujitsu/Fortran/0727 ...
>   | FAIL: test-suite :: Fujitsu/Fortran/0727/Fujitsu-Fortran-0727_0008.test
>   | # "FAIL" means : the execution of the compiled binary failed / output of 
> the binary differs from the expected one
> 
> Used configuration :
>   * Toolchain : cmake -G Ninja  ../llvm/llvm 
> "-DLLVM_ENABLE_PROJECTS=clang;lld;flang;clang-tools-extra"           
> "-DLLVM_ENABLE_RUNTIMES=openmp"         -DCMAKE_BUILD_TYPE=Release 
> -DLLVM_ENABLE_ASSERTIONS=True        -DCMAKE_INSTALL_PREFIX=../llvm-install   
>        "-DLLVM_TARGETS_TO_BUILD=AArch64" -DCLANG_DEFAULT_LINKER=lld
>   * Testsuite : export 
> LD_LIBRARY_PATH=$\WORKSPACE/llvm-install/lib/aarch64-unknown-linux-gnu$\{LD_LIBRARY_PATH:+:$\LD_LIBRARY_PATH}
>  cmake -GNinja  -DCMAKE_C_COMPILER="$\WORKSPACE/llvm-install/bin2/clang"      
>   -DCMAKE_CXX_COMPILER="$\WORKSPACE/llvm-install/bin2/clang++"    
> -DCMAKE_Fortran_COMPILER="$\WORKSPACE/llvm-install/bin2/flang-new"      
> -DCMAKE_BUILD_TYPE=Release      -DCMAKE_C_FLAGS= -DCMAKE_CXX_FLAGS= 
> -DCMAKE_Fortran_FLAGS=      -DCMAKE_C_FLAGS_RELEASE="-O0 -g"        
> -DCMAKE_CXX_FLAGS_RELEASE="-O0 -g"      -DCMAKE_Fortran_FLAGS_RELEASE="-O0 
> -g"  -DTEST_SUITE_FORTRAN=ON         -DTEST_SUITE_SUBDIRS=Fujitsu            
> "$\WORKSPACE/test/test-suite"
> 
> We track this bug report under https://linaro.atlassian.net/browse/LLVM-2088. 
> Please let us know if you have a fix.
> 
> If you have any questions regarding this report, please ask on 
> [email protected] mailing list.
> 
> -----------------8<--------------------------8<--------------------------8<--------------------------
> 
> The information below contains the details of the failures, and the ways to 
> reproduce a debug environment:
> 
> You can find the failure logs in *.log.1.xz files in
>  * 
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-O0-debug-build/1378/artifact/artifacts/00-sumfiles/
> The full lists of regressions and improvements as well as configure and make 
> commands are in
>  * 
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-O0-debug-build/1378/artifact/artifacts/notify/
> The list of [ignored] baseline and flaky failures are in
>  * 
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-O0-debug-build/1378/artifact/artifacts/sumfiles/xfails.xfail
> 
> Fujitsu testsuite : https://github.com/fujitsu/compiler-test-suite/
> 
> Current build   : 
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-O0-debug-build/1378/artifact/artifacts
> Reference build : 
> https://ci.linaro.org/job/tcwg_flang_test--main-aarch64-O0-debug-build/1377/artifact/artifacts
> 
> Instruction to reproduce the build : 
> https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/llvm/sha1/a103b9b207f67e0afbaf41647a56a4cb716414c6/tcwg_flang_test/main-aarch64-O0-debug/reproduction_instructions.txt
> 
> Full commit : 
> https://github.com/llvm/llvm-project/commit/a103b9b207f67e0afbaf41647a56a4cb716414c6
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