[llvm-branch-commits] [clang] [llvm] [Instrumentor] Add unreachable support; unreachable stack trace printing (PR #195408)
via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Thu May 7 20:24:29 PDT 2026
github-actions[bot] wrote:
<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results
* 134459 tests passed
* 3251 tests skipped
* 2 tests failed
## Failed Tests
(click on a test name to see its output)
### Clang
<details>
<summary>Clang.Instrumentor/InstrumentorStackUsage.cpp</summary>
```
Exit Code: 1
Command Output (stdout):
--
# RUN: at line 2
c:\_work\llvm-project\llvm-project\build\bin\clang.exe --driver-mode=g++ -O0 C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/StackUsageRT.cpp -o C:\_work\llvm-project\llvm-project\build\tools\clang\test\Instrumentor\Output\InstrumentorStackUsage.cpp.tmp.StackUsageRT.o -c
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' --driver-mode=g++ -O0 'C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/StackUsageRT.cpp' -o 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Instrumentor\Output\InstrumentorStackUsage.cpp.tmp.StackUsageRT.o' -c
# note: command had no output on stdout or stderr
# RUN: at line 3
c:\_work\llvm-project\llvm-project\build\bin\clang.exe --driver-mode=g++ -O0 -mllvm -enable-instrumentor -mllvm -instrumentor-read-config-file=C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/StackUsageRT.json C:\_work\llvm-project\llvm-project\build\tools\clang\test\Instrumentor\Output\InstrumentorStackUsage.cpp.tmp.StackUsageRT.o -o C:\_work\llvm-project\llvm-project\build\tools\clang\test\Instrumentor\Output\InstrumentorStackUsage.cpp.tmp C:\_work\llvm-project\llvm-project\clang\test\Instrumentor\InstrumentorStackUsage.cpp
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' --driver-mode=g++ -O0 -mllvm -enable-instrumentor -mllvm '-instrumentor-read-config-file=C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/StackUsageRT.json' 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Instrumentor\Output\InstrumentorStackUsage.cpp.tmp.StackUsageRT.o' -o 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Instrumentor\Output\InstrumentorStackUsage.cpp.tmp' 'C:\_work\llvm-project\llvm-project\clang\test\Instrumentor\InstrumentorStackUsage.cpp'
# .---command stderr------------
# | fatal error: error in backend: IO sandbox violation
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
# | Stack dump:
# | 0. Program arguments: C:\\_work\\llvm-project\\llvm-project\\build\\bin\\clang.exe -cc1 -triple x86_64-pc-windows-msvc19.44.35226 -O0 -emit-obj -dumpdir C:\\_work\\llvm-project\\llvm-project\\build\\tools\\clang\\test\\Instrumentor\\Output\\InstrumentorStackUsage.cpp.tmp- -disable-free -clear-ast-before-backend -main-file-name InstrumentorStackUsage.cpp -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -fms-volatile -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -fdebug-compilation-dir=C:\\_work\\llvm-project\\llvm-project\\build\\tools\\clang\\test\\Instrumentor -fcoverage-compilation-dir=C:\\_work\\llvm-project\\llvm-project\\build\\tools\\clang\\test\\Instrumentor -resource-dir C:\\_work\\llvm-project\\llvm-project\\build\\lib\\clang\\23 -internal-isystem C:\\_work\\llvm-project\\llvm-project\\build\\lib\\clang\\23\\include -internal-isystem C:\\BuildTools\\VC\\Tools\\MSVC\\14.44.35207\\include -internal-isystem C:\\BuildTools\\VC\\Tools\\MSVC\\14.44.35207\\ATLMFC\\include -internal-isystem C:\\BuildTools\\VC\\Auxiliary\\VS\\include -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\include\\10.0.26100.0\\ucrt" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\\\include\\10.0.26100.0\\\\um" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\\\include\\10.0.26100.0\\\\shared" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\\\include\\10.0.26100.0\\\\winrt" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\10\\\\include\\10.0.26100.0\\\\cppwinrt" -internal-isystem "C:\\Program Files (x86)\\Windows Kits\\NETFXSDK\\4.8\\include\\um" -fdeprecated-macro -ferror-limit 19 -fno-use-cxa-atexit -fms-extensions -fms-compatibility -fms-compatibility-version=19.44.35226 -std=c++14 -fskip-odr-check-in-gmf -fdelayed-template-parsing -fcxx-exceptions -fexceptions -mllvm -enable-instrumentor -mllvm -instrumentor-read-config-file=C:\\_work\\llvm-project\\llvm-project\\clang\\test\\Instrumentor/StackUsageRT.json -faddrsig -o C:\\Users\\ContainerAdministrator\\AppData\\Local\\Temp\\lit-tmp-g6qz0onq\\InstrumentorStackUsage-81412d.o -x c++ C:\\_work\\llvm-project\\llvm-project\\clang\\test\\Instrumentor\\InstrumentorStackUsage.cpp
# | 1. <eof> parser at end of file
# | 2. Optimizer
# | 3. Running pass "instrumentor" on module "C:\_work\llvm-project\llvm-project\clang\test\Instrumentor\InstrumentorStackUsage.cpp"
# | clang: error: clang frontend command failed with exit code 70 (use -v to see invocation)
# | clang version 23.0.0git (https://github.com/llvm/llvm-project 9533a2d90e85751870f7911d912139ff83d153ed)
# | Target: x86_64-pc-windows-msvc
# | Thread model: posix
# | InstalledDir: C:\_work\llvm-project\llvm-project\build\bin
# | Build config: +assertions
# | clang: note: diagnostic msg:
# | ********************
# |
# | PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
# | Preprocessed source(s) and associated run script(s) are located at:
# | clang: note: diagnostic msg: C:\Users\ContainerAdministrator\AppData\Local\Temp\lit-tmp-g6qz0onq\InstrumentorStackUsage-58be2c.cpp
# | clang: note: diagnostic msg: C:\Users\ContainerAdministrator\AppData\Local\Temp\lit-tmp-g6qz0onq\InstrumentorStackUsage-58be2c.sh
# | clang: note: diagnostic msg:
# |
# | ********************
# `-----------------------------
# error: command failed with exit status: 1
--
```
</details>
<details>
<summary>Clang.Instrumentor/InstrumentorUnreachable.cpp</summary>
```
Exit Code: 1
Command Output (stdout):
--
# RUN: at line 2
c:\_work\llvm-project\llvm-project\build\bin\clang.exe --driver-mode=g++ -O0 -IC:\_work\llvm-project\llvm-project\build/include/ -IC:\_work\llvm-project\llvm-project\llvm/include/ C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/UnreachableRT.cpp -o C:\_work\llvm-project\llvm-project\build\tools\clang\test\Instrumentor\Output\InstrumentorUnreachable.cpp.tmp.UnreachableRT.o -c
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' --driver-mode=g++ -O0 '-IC:\_work\llvm-project\llvm-project\build/include/' '-IC:\_work\llvm-project\llvm-project\llvm/include/' 'C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/UnreachableRT.cpp' -o 'C:\_work\llvm-project\llvm-project\build\tools\clang\test\Instrumentor\Output\InstrumentorUnreachable.cpp.tmp.UnreachableRT.o' -c
# .---command stderr------------
# | In file included from C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/UnreachableRT.cpp:13:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/Support/raw_ostream.h:16:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/SmallVector.h:18:
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/DenseMapInfo.h:28:19: warning: nested namespace definition is a C++17 extension; define each namespace separately [-Wc++17-extensions]
# | 28 | namespace densemap::detail {
# | | ^~~~~~~~
# | | { namespace detail
# | 29 | // A bit mixer with very low latency using one multiplications and one
# | 30 | // xor-shift. The constant is from splitmix64.
# | 31 | inline uint64_t mix(uint64_t x) {
# | 32 | x *= 0xbf58476d1ce4e5b9u;
# | 33 | x ^= x >> 31;
# | 34 | return x;
# | 35 | }
# | 36 | } // namespace densemap::detail
# | | }
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/DenseMapInfo.h:117:8: warning: constexpr if is a C++17 extension [-Wc++17-extensions]
# | 117 | if constexpr (std::is_unsigned_v<T> || std::is_same_v<T, long>)
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/DenseMapInfo.h:239:48: error: no member named 'optional' in namespace 'std'
# | 239 | template <typename T> struct DenseMapInfo<std::optional<T>> {
# | | ^~~~~~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/DenseMapInfo.h:239:57: error: 'T' does not refer to a value
# | 239 | template <typename T> struct DenseMapInfo<std::optional<T>> {
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/DenseMapInfo.h:239:20: note: declared here
# | 239 | template <typename T> struct DenseMapInfo<std::optional<T>> {
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/DenseMapInfo.h:239:59: error: expected unqualified-id
# | 239 | template <typename T> struct DenseMapInfo<std::optional<T>> {
# | | ^
# | In file included from C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/UnreachableRT.cpp:13:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/Support/raw_ostream.h:17:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:13:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLFunctionalExtras.h:18:
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:36:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 36 | inline constexpr T e_v = T(0x1.5bf0a8b145769P+1); // (2.7182818284590452354) https://oeis.org/A001113
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:38:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 38 | inline constexpr T egamma_v = T(0x1.2788cfc6fb619P-1); // (.57721566490153286061) https://oeis.org/A001620
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:40:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 40 | inline constexpr T ln2_v = T(0x1.62e42fefa39efP-1); // (.69314718055994530942) https://oeis.org/A002162
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:42:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 42 | inline constexpr T ln10_v = T(0x1.26bb1bbb55516P+1); // (2.3025850929940456840) https://oeis.org/A002392
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:44:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 44 | inline constexpr T log2e_v = T(0x1.71547652b82feP+0); // (1.4426950408889634074)
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:46:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 46 | inline constexpr T log10e_v = T(0x1.bcb7b1526e50eP-2); // (.43429448190325182765)
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:48:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 48 | inline constexpr T pi_v = T(0x1.921fb54442d18P+1); // (3.1415926535897932385) https://oeis.org/A000796
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:50:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 50 | inline constexpr T inv_pi_v = T(0x1.45f306dc9c883P-2); // (.31830988618379067154) https://oeis.org/A049541
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:52:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 52 | inline constexpr T inv_sqrtpi_v = T(0x1.20dd750429b6dP-1); // (.56418958354775628695) https://oeis.org/A087197
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:54:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 54 | inline constexpr T sqrt2_v = T(0x1.6a09e667f3bcdP+0); // (1.4142135623730950488) https://oeis.org/A00219
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:56:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 56 | inline constexpr T inv_sqrt2_v = T(0x1.6a09e667f3bcdP-1); // (.70710678118654752440)
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:58:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 58 | inline constexpr T sqrt3_v = T(0x1.bb67ae8584caaP+0); // (1.7320508075688772935) https://oeis.org/A002194
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:60:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 60 | inline constexpr T inv_sqrt3_v = T(0x1.279a74590331cP-1); // (.57735026918962576451)
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:62:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 62 | inline constexpr T phi_v = T(0x1.9e3779b97f4a8P+0); // (1.6180339887498948482) https://oeis.org/A001622
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:64:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 64 | inline constexpr double e = e_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:65:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 65 | inline constexpr double egamma = egamma_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:66:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 66 | inline constexpr double ln2 = ln2_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:67:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 67 | inline constexpr double ln10 = ln10_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:68:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 68 | inline constexpr double log2e = log2e_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:69:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 69 | inline constexpr double log10e = log10e_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:70:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 70 | inline constexpr double pi = pi_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:71:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 71 | inline constexpr double inv_pi = inv_pi_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:72:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 72 | inline constexpr double inv_sqrtpi = inv_sqrtpi_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:73:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 73 | inline constexpr double sqrt2 = sqrt2_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:74:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 74 | inline constexpr double inv_sqrt2 = inv_sqrt2_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:75:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 75 | inline constexpr double sqrt3 = sqrt3_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:76:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 76 | inline constexpr double inv_sqrt3 = inv_sqrt3_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:77:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 77 | inline constexpr double phi = phi_v<double>;
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:149:39: warning: 'static_assert' with no message is a C++17 extension [-Wc++17-extensions]
# | 149 | static_assert(!std::is_function_v<T>);
# | | ^
# | | , ""
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:156:16: error: no template named 'invoke_result_t' in namespace 'std'; did you mean '_Invoke_result_t'?
# | 156 | constexpr std::invoke_result_t<FnT, ArgsT...>
# | | ~~~~~^~~~~~~~~~~~~~~
# | | _Invoke_result_t
# | C:\BuildTools\VC\Tools\MSVC\14.44.35207\include\type_traits:1821:1: note: '_Invoke_result_t' declared here
# | 1821 | using _Invoke_result_t = typename _Select_invoke_traits<_Callable, _Args...>::type;
# | | ^
# | In file included from C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/UnreachableRT.cpp:13:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/Support/raw_ostream.h:17:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:13:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLFunctionalExtras.h:18:
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:158:15: error: no member named 'apply' in namespace 'std'
# | 158 | return std::apply(std::forward<FnT>(Fn),
# | | ^~~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:187:16: error: no template named 'optional' in namespace 'std'
# | 187 | constexpr std::optional<remove_cvref_t<std::invoke_result_t<Function, Value>>>
# | | ~~~~~^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:187:45: error: no template named 'invoke_result_t' in namespace 'std'; did you mean '_Invoke_result_t'?
# | 187 | constexpr std::optional<remove_cvref_t<std::invoke_result_t<Function, Value>>>
# | | ~~~~~^~~~~~~~~~~~~~~
# | | _Invoke_result_t
# | C:\BuildTools\VC\Tools\MSVC\14.44.35207\include\type_traits:1821:1: note: '_Invoke_result_t' declared here
# | 1821 | using _Invoke_result_t = typename _Select_invoke_traits<_Callable, _Args...>::type;
# | | ^
# | In file included from C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/UnreachableRT.cpp:13:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/Support/raw_ostream.h:17:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:13:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLFunctionalExtras.h:18:
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:192:15: error: no member named 'nullopt' in namespace 'std'
# | 192 | return std::nullopt;
# | | ^~~~~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:206:1: warning: inline variables are a C++17 extension [-Wc++17-extensions]
# | 206 | inline constexpr from_range_t from_range{};
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:230:11: error: 'auto' not allowed in template parameter until C++17
# | 230 | template <auto ConstFn> struct FnConstant {
# | | ^~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:264:8: warning: constexpr if is a C++17 extension [-Wc++17-extensions]
# | 264 | if constexpr (BindFront)
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:274:8: warning: constexpr if is a C++17 extension [-Wc++17-extensions]
# | 274 | if constexpr (BindFront)
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:300:11: error: 'auto' not allowed in template parameter until C++17
# | 300 | template <auto ConstFn, typename... BindArgsT>
# | | ^~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:303:6: warning: constexpr if is a C++17 extension [-Wc++17-extensions]
# | 303 | if constexpr (std::is_pointer_v<decltype(ConstFn)> ||
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:305:37: warning: 'static_assert' with no message is a C++17 extension [-Wc++17-extensions]
# | 305 | static_assert(ConstFn != nullptr);
# | | ^
# | | , ""
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:329:11: error: 'auto' not allowed in template parameter until C++17
# | 329 | template <auto ConstFn, typename... BindArgsT>
# | | ^~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:332:6: warning: constexpr if is a C++17 extension [-Wc++17-extensions]
# | 332 | if constexpr (std::is_pointer_v<decltype(ConstFn)> ||
# | | ^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/STLForwardCompat.h:334:37: warning: 'static_assert' with no message is a C++17 extension [-Wc++17-extensions]
# | 334 | static_assert(ConstFn != nullptr);
# | | ^
# | | , ""
# | In file included from C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/UnreachableRT.cpp:13:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/Support/raw_ostream.h:17:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:14:
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/iterator_range.h:63:1: error: a type specifier is required for all declarations
# | 63 | iterator_range(Container &&)
# | | ^
# | In file included from C:\_work\llvm-project\llvm-project\clang\test\Instrumentor/UnreachableRT.cpp:13:
# | In file included from C:\_work\llvm-project\llvm-project\llvm/include\llvm/Support/raw_ostream.h:17:
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:106:41: error: no type named 'string_view' in namespace 'std'
# | 106 | /*implicit*/ constexpr StringRef(std::string_view Str)
# | | ~~~~~^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:248:27: error: no type named 'string_view' in namespace 'std'
# | 248 | constexpr operator std::string_view() const {
# | | ~~~~~^
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:94:30: error: no member named 'string_view' in namespace 'std'
# | 94 | : StringRef(Str ? std::string_view(Str) : std::string_view()) {}
# | | ^~~~~~~~~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:94:54: error: no member named 'string_view' in namespace 'std'
# | 94 | : StringRef(Str ? std::string_view(Str) : std::string_view()) {}
# | | ^~~~~~~~~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:290:17: error: no member named 'string_view' in namespace 'std'
# | 290 | return std::string_view(*this).find(C, From);
# | | ^~~~~~~~~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:344:26: error: no member named 'not_fn' in namespace 'std'
# | 344 | return rfind_if(std::not_fn(F), End);
# | | ^~~~~~
# | C:\_work\llvm-project\llvm-project\llvm/include\llvm/ADT/StringRef.h:655:10: error: use of undeclared identifier 'starts_with'
# | 655 | if (!starts_with(Prefix))
# | | ^~~~~~~~~~~
# | fatal error: too many errors emitted, stopping now [-ferror-limit=]
# | 38 warnings and 20 errors generated.
# `-----------------------------
# error: command failed with exit status: 1
--
```
</details>
If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.
https://github.com/llvm/llvm-project/pull/195408
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