[lldb-dev] [Release-testers] [cfe-dev] [10.0.0 Release] Release Candidate 1 is here

[Dimitry Andric via lldb-dev]

On 6 Feb 2020, at 11:16, Yvan Roux via Release-testers <release-testers at lists.llvm.org> wrote:
...
> And a bunch of errors in the testsuite:
> 
> FAILED: Bitcode/simd_ops/CMakeFiles/simd_ops_test_op_usubl_1306.dir/AArch64_halide_runtime.bc.o
> /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-apm_64-build/rc1/test-suite-build/tools/timeit
> --summary Bitcode/simd_ops/CMakeFiles/simd_ops_test_op_usubl_1306.dir/AArch64_halide_runtime.bc.o.time
> /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-apm_64-build/rc1/Phase3/Release/llvmCore-10.0.0-rc1.install/usr/local/bin/clang++
> -DNDEBUG  -O3 -DNDEBUG   -w -Werror=date-time -MD -MT
> Bitcode/simd_ops/CMakeFiles/simd_ops_test_op_usubl_1306.dir/AArch64_halide_runtime.bc.o
> -MF Bitcode/simd_ops/CMakeFiles/simd_ops_test_op_usubl_1306.dir/AArch64_halide_runtime.bc.o.d
> -o Bitcode/simd_ops/CMakeFiles/simd_ops_test_op_usubl_1306.dir/AArch64_halide_runtime.bc.o
> -c /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-apm_64-build/rc1/llvm-test-suite/Bitcode/simd_ops/AArch64_halide_runtime.bc
> double free or corruption (fasttop)
> Stack dump:
> 0. Program arguments:
> /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-apm_64-build/rc1/Phase3/Release/llvmCore-10.0.0-rc1.install/usr/local/bin/clang++
> -DNDEBUG -O3 -DNDEBUG -w -Werror=date-time -MD -MT
> Bitcode/simd_ops/CMakeFiles/simd_ops_test_op_usubl_1306.dir/AArch64_halide_runtime.bc.o
> -MF Bitcode/simd_ops/CMakeFiles/simd_ops_test_op_usubl_1306.dir/AArch64_halide_runtime.bc.o.d
> -o Bitcode/simd_ops/CMakeFiles/simd_ops_test_op_usubl_1306.dir/AArch64_halide_runtime.bc.o
> -c /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-apm_64-build/rc1/llvm-test-suite/Bitcode/simd_ops/AArch64_halide_runtime.bc
> 1. Per-module optimization passes
> 2. Running pass 'Global Variable Optimizer' on module
> '/home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-apm_64-build/rc1/llvm-test-suite/Bitcode/simd_ops/AArch64_halide_runtime.bc'.
> malloc_consolidate(): invalid chunk size
> /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-apm_64-build/rc1/test-suite-build/tools/timeit:
> error: child terminated by signal 6

Yes, this looks almost certainly like https://bugs.llvm.org/show_bug.cgi?id=44763.

From the last lines of your output, I assume it is some sort of double
free issue.  Might be worth running it under valgrind, or with ASan
enabled?

-Dimitry

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