[clang] [clang-format] Handle static_assert more accurately (PR #166042)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux-bootstrap-msan` running on `sanitizer-buildbot10` while building `clang` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/94/builds/12328

<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-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-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: 92069 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.
FAIL: lld :: COFF/string-tail-merge.s (89490 of 92069)
******************** TEST 'lld :: COFF/string-tail-merge.s' FAILED ********************
Exit Code: -6

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-mc -triple=x86_64-windows-msvc -filetype=obj -o /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-mc -triple=x86_64-windows-msvc -filetype=obj -o /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# note: command had no output on stdout or stderr
# RUN: at line 3
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console
# note: command had no output on stdout or stderr
# RUN: at line 4
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-objdump -s /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe | /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-objdump -s /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe
# note: command had no output on stdout or stderr
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# note: command had no output on stdout or stderr
# RUN: at line 5
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console /opt:noicf /opt:lldtailmerge
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console /opt:noicf /opt:lldtailmerge
# note: command had no output on stdout or stderr
# RUN: at line 6
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-objdump -s /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe | /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-objdump -s /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe
# note: command had no output on stdout or stderr
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# note: command had no output on stdout or stderr
# RUN: at line 7
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console /opt:noicf
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console /opt:noicf
# .---command stderr------------
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# |  #0 0x0000aaed46379ff8 ___interceptor_backtrace /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/../sanitizer_common/sanitizer_common_interceptors.inc:4556:13
# |  #1 0x0000aaed4656ec60 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:838:7
# |  #2 0x0000aaed465690b4 llvm::sys::RunSignalHandlers() /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Signals.cpp:105:18
# |  #3 0x0000aaed46570a18 SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:426:38
Step 11 (stage2/msan check) failure: stage2/msan check (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:531: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-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: 92069 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.
FAIL: lld :: COFF/string-tail-merge.s (89490 of 92069)
******************** TEST 'lld :: COFF/string-tail-merge.s' FAILED ********************
Exit Code: -6

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-mc -triple=x86_64-windows-msvc -filetype=obj -o /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-mc -triple=x86_64-windows-msvc -filetype=obj -o /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# note: command had no output on stdout or stderr
# RUN: at line 3
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console
# note: command had no output on stdout or stderr
# RUN: at line 4
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-objdump -s /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe | /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-objdump -s /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe
# note: command had no output on stdout or stderr
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# note: command had no output on stdout or stderr
# RUN: at line 5
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console /opt:noicf /opt:lldtailmerge
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console /opt:noicf /opt:lldtailmerge
# note: command had no output on stdout or stderr
# RUN: at line 6
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-objdump -s /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe | /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/llvm-objdump -s /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe
# note: command had no output on stdout or stderr
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/lld/test/COFF/string-tail-merge.s
# note: command had no output on stdout or stderr
# RUN: at line 7
/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console /opt:noicf
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/bin/lld-link /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.obj /out:/home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm_build_msan/tools/lld/test/COFF/Output/string-tail-merge.s.tmp.exe /entry:main /subsystem:console /opt:noicf
# .---command stderr------------
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
# |  #0 0x0000aaed46379ff8 ___interceptor_backtrace /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/compiler-rt/lib/msan/../sanitizer_common/sanitizer_common_interceptors.inc:4556:13
# |  #1 0x0000aaed4656ec60 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:838:7
# |  #2 0x0000aaed465690b4 llvm::sys::RunSignalHandlers() /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Signals.cpp:105:18
# |  #3 0x0000aaed46570a18 SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-aarch64-linux-bootstrap-msan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:426:38

```

</details>

https://github.com/llvm/llvm-project/pull/166042