[clang-tools-extra] [clang-doc] Merge data into persistent memory (PR #190056)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-x86_64-linux-bootstrap-msan` running on `sanitizer-buildbot6` while building `clang-tools-extra` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/164/builds/20498

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld.lld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 98194 tests, 64 workers --
Testing:  0.. 10.. 20
FAIL: Clang Tools :: clang-doc/json/class-requires.cpp (24111 of 98194)
******************** TEST 'Clang Tools :: clang-doc/json/class-requires.cpp' FAILED ********************
Exit Code: -6

Command Output (stdout):
--
# RUN: at line 1
rm -rf /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp && mkdir -p /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp
# executed command: rm -rf /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp
# note: command had no output on stdout or stderr
# executed command: mkdir -p /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp
# note: command had no output on stdout or stderr
# RUN: at line 2
clang-doc --extra-arg -std=c++20 --output=/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp --format=json --executor=standalone /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json/class-requires.cpp
# executed command: clang-doc --extra-arg -std=c++20 --output=/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp --format=json --executor=standalone /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json/class-requires.cpp
# .---command stderr------------
# | Error while trying to load a compilation database:
# | Could not auto-detect compilation database for file "/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json/class-requires.cpp"
# | No compilation database found in /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json or any parent directory
# | fixed-compilation-database: Error while opening fixed database: No such file or directory
# | json-compilation-database: Error while opening JSON database: No such file or directory
# | Running without flags.
# |  #0 0x00005728c0ecfc8f ___interceptor_backtrace /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/../sanitizer_common/sanitizer_common_interceptors.inc:4556:13
# |  #1 0x00005728c11212bf llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:0:13
# |  #2 0x00005728c1118680 llvm::sys::RunSignalHandlers() /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Signals.cpp:0:5
# |  #3 0x00005728c112383a SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:448:38
# |  #4 0x00005728c0f01e9e IsInInterceptorScope /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/msan_interceptors.cpp:78:10
# |  #5 0x00005728c0f01e9e SignalAction(int, void*, void*) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/msan_interceptors.cpp:1167:3
# |  #6 0x000079462f0458d0 (/lib/x86_64-linux-gnu/libc.so.6+0x458d0)
# |  #7 0x000079462f0a49bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0xa49bc)
# |  #8 0x000079462f04579e raise (/lib/x86_64-linux-gnu/libc.so.6+0x4579e)
# |  #9 0x000079462f0288cd abort (/lib/x86_64-linux-gnu/libc.so.6+0x288cd)
# | #10 0x00005728c0e91fdc (/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/clang-doc+0xf62fdc)
# | #11 0x00005728c0e90abe __sanitizer::Die() /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# | #12 0x00005728c0ea36d3 (/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/clang-doc+0xf746d3)
# | #13 0x00005728c2bf49f7 clang::doc::ConceptInfo::merge(clang::doc::ConceptInfo&&) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:625:28
# | #14 0x00005728c2bf2b6d reduceChildren<clang::doc::ConceptInfo> /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:0:17
# | #15 0x00005728c2bf2b6d clang::doc::NamespaceInfo::merge(clang::doc::NamespaceInfo&&) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:512:3
# | #16 0x00005728c2bf00c7 clang::doc::mergeSingleInfo(clang::doc::Info*&, clang::doc::Info*&&, llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul, 128ul>&) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:0:11
Step 11 (stage2/msan check) failure: stage2/msan check (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld.lld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 98194 tests, 64 workers --
Testing:  0.. 10.. 20
FAIL: Clang Tools :: clang-doc/json/class-requires.cpp (24111 of 98194)
******************** TEST 'Clang Tools :: clang-doc/json/class-requires.cpp' FAILED ********************
Exit Code: -6

Command Output (stdout):
--
# RUN: at line 1
rm -rf /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp && mkdir -p /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp
# executed command: rm -rf /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp
# note: command had no output on stdout or stderr
# executed command: mkdir -p /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp
# note: command had no output on stdout or stderr
# RUN: at line 2
clang-doc --extra-arg -std=c++20 --output=/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp --format=json --executor=standalone /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json/class-requires.cpp
# executed command: clang-doc --extra-arg -std=c++20 --output=/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp --format=json --executor=standalone /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json/class-requires.cpp
# .---command stderr------------
# | Error while trying to load a compilation database:
# | Could not auto-detect compilation database for file "/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json/class-requires.cpp"
# | No compilation database found in /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json or any parent directory
# | fixed-compilation-database: Error while opening fixed database: No such file or directory
# | json-compilation-database: Error while opening JSON database: No such file or directory
# | Running without flags.
# |  #0 0x00005728c0ecfc8f ___interceptor_backtrace /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/../sanitizer_common/sanitizer_common_interceptors.inc:4556:13
# |  #1 0x00005728c11212bf llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:0:13
# |  #2 0x00005728c1118680 llvm::sys::RunSignalHandlers() /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Signals.cpp:0:5
# |  #3 0x00005728c112383a SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:448:38
# |  #4 0x00005728c0f01e9e IsInInterceptorScope /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/msan_interceptors.cpp:78:10
# |  #5 0x00005728c0f01e9e SignalAction(int, void*, void*) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/msan_interceptors.cpp:1167:3
# |  #6 0x000079462f0458d0 (/lib/x86_64-linux-gnu/libc.so.6+0x458d0)
# |  #7 0x000079462f0a49bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0xa49bc)
# |  #8 0x000079462f04579e raise (/lib/x86_64-linux-gnu/libc.so.6+0x4579e)
# |  #9 0x000079462f0288cd abort (/lib/x86_64-linux-gnu/libc.so.6+0x288cd)
# | #10 0x00005728c0e91fdc (/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/clang-doc+0xf62fdc)
# | #11 0x00005728c0e90abe __sanitizer::Die() /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# | #12 0x00005728c0ea36d3 (/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/clang-doc+0xf746d3)
# | #13 0x00005728c2bf49f7 clang::doc::ConceptInfo::merge(clang::doc::ConceptInfo&&) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:625:28
# | #14 0x00005728c2bf2b6d reduceChildren<clang::doc::ConceptInfo> /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:0:17
# | #15 0x00005728c2bf2b6d clang::doc::NamespaceInfo::merge(clang::doc::NamespaceInfo&&) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:512:3
# | #16 0x00005728c2bf00c7 clang::doc::mergeSingleInfo(clang::doc::Info*&, clang::doc::Info*&&, llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul, 128ul>&) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:0:11
Step 16 (stage2/msan_track_origins check) failure: stage2/msan_track_origins check (failure)
...
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld.lld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/ld.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/lld-link
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/ld64.lld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/wasm-ld
llvm-lit: /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 98194 tests, 64 workers --
Testing:  0.. 10.. 20
FAIL: Clang Tools :: clang-doc/json/class-requires.cpp (24086 of 98194)
******************** TEST 'Clang Tools :: clang-doc/json/class-requires.cpp' FAILED ********************
Exit Code: -6

Command Output (stdout):
--
# RUN: at line 1
rm -rf /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp && mkdir -p /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp
# executed command: rm -rf /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp
# note: command had no output on stdout or stderr
# executed command: mkdir -p /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp
# note: command had no output on stdout or stderr
# RUN: at line 2
clang-doc --extra-arg -std=c++20 --output=/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp --format=json --executor=standalone /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json/class-requires.cpp
# executed command: clang-doc --extra-arg -std=c++20 --output=/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/tools/clang/tools/extra/test/clang-doc/json/Output/class-requires.cpp.tmp --format=json --executor=standalone /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json/class-requires.cpp
# .---command stderr------------
# | Error while trying to load a compilation database:
# | Could not auto-detect compilation database for file "/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json/class-requires.cpp"
# | No compilation database found in /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/test/clang-doc/json or any parent directory
# | fixed-compilation-database: Error while opening fixed database: No such file or directory
# | json-compilation-database: Error while opening JSON database: No such file or directory
# | Running without flags.
# |  #0 0x000055b08e793e0f ___interceptor_backtrace /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/../sanitizer_common/sanitizer_common_interceptors.inc:4556:13
# |  #1 0x000055b08eaed86f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:880:13
# |  #2 0x000055b08eae1b1b llvm::sys::RunSignalHandlers() /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Signals.cpp:0:5
# |  #3 0x000055b08eaf0b09 SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:448:38
# |  #4 0x000055b08e7c601e IsInInterceptorScope /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/msan_interceptors.cpp:78:10
# |  #5 0x000055b08e7c601e SignalAction(int, void*, void*) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/msan_interceptors.cpp:1167:3
# |  #6 0x00007a3f424458d0 (/lib/x86_64-linux-gnu/libc.so.6+0x458d0)
# |  #7 0x00007a3f424a49bc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0xa49bc)
# |  #8 0x00007a3f4244579e raise (/lib/x86_64-linux-gnu/libc.so.6+0x4579e)
# |  #9 0x00007a3f424288cd abort (/lib/x86_64-linux-gnu/libc.so.6+0x288cd)
# | #10 0x000055b08e75615c (/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/clang-doc+0x113515c)
# | #11 0x000055b08e754c3e __sanitizer::Die() /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# | #12 0x000055b08e7678d3 (/home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan_track_origins/bin/clang-doc+0x11468d3)
# | #13 0x000055b091189f50 size /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/include/llvm/ADT/StringRef.h:143:56
# | #14 0x000055b091189f50 empty /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/include/llvm/ADT/StringRef.h:140:55
# | #15 0x000055b091189f50 clang::doc::ConceptInfo::merge(clang::doc::ConceptInfo&&) /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:625:28
# | #16 0x000055b091186f8a reduceChildren<clang::doc::ConceptInfo> /home/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang-tools-extra/clang-doc/Representation.cpp:0:17

```

</details>

https://github.com/llvm/llvm-project/pull/190056