[compiler-rt] [compiler-rt][nfc] DenseMap needs placement new (PR #133329)

Thu Mar 27 22:17:14 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-gcc-ubuntu-no-asserts` running on `doug-worker-6` while building `compiler-rt` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/202/builds/339

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
...
0.119 [0/6/7] Linking CXX shared library /home/buildbot/buildbot-root/gcc-no-asserts/build/lib/clang/21/lib/x86_64-unknown-linux-gnu/libclang_rt.nsan.so
0.126 [0/5/8] Linking CXX shared library /home/buildbot/buildbot-root/gcc-no-asserts/build/lib/clang/21/lib/x86_64-unknown-linux-gnu/libclang_rt.hwasan_aliases.so
0.137 [0/4/9] Linking CXX shared library /home/buildbot/buildbot-root/gcc-no-asserts/build/lib/clang/21/lib/x86_64-unknown-linux-gnu/libclang_rt.memprof.so
0.145 [0/3/10] Linking CXX shared library /home/buildbot/buildbot-root/gcc-no-asserts/build/lib/clang/21/lib/x86_64-unknown-linux-gnu/libclang_rt.hwasan.so
0.160 [0/2/11] Linking CXX shared library /home/buildbot/buildbot-root/gcc-no-asserts/build/lib/clang/21/lib/x86_64-unknown-linux-gnu/libclang_rt.asan.so
0.323 [0/1/12] Generating /home/buildbot/buildbot-root/gcc-no-asserts/build/compile_commands.json
2.478 [3/1/14] cd /home/buildbot/buildbot-root/gcc-no-asserts/build/runtimes/runtimes-bins && /usr/bin/cmake/bin/cmake --build /home/buildbot/buildbot-root/gcc-no-asserts/build/runtimes/runtimes-bins/ --target runtimes-test-depends --config Release
4.309 [45/10/1] Generating SANITIZER_TEST_OBJECTS.sanitizer_hash_test.cpp.x86_64.o
4.352 [44/10/2] Generating SANITIZER_TEST_OBJECTS.sanitizer_chained_origin_depot_test.cpp.x86_64.o
4.605 [43/10/3] Generating SANITIZER_TEST_OBJECTS.sanitizer_dense_map_test.cpp.x86_64.o
FAILED: compiler-rt/lib/sanitizer_common/tests/SANITIZER_TEST_OBJECTS.sanitizer_dense_map_test.cpp.x86_64.o /home/buildbot/buildbot-root/gcc-no-asserts/build/runtimes/runtimes-bins/compiler-rt/lib/sanitizer_common/tests/SANITIZER_TEST_OBJECTS.sanitizer_dense_map_test.cpp.x86_64.o 
cd /home/buildbot/buildbot-root/gcc-no-asserts/build/runtimes/runtimes-bins/compiler-rt/lib/sanitizer_common/tests && /home/buildbot/buildbot-root/gcc-no-asserts/build/./bin/clang++ -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Wall -Wno-unused-parameter -Wno-unknown-warning-option -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta -I/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/include -g -Wno-covered-switch-default -Wno-suggest-override -DGTEST_NO_LLVM_SUPPORT=1 -DGTEST_HAS_RTTI=0 -I/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/runtimes/../third-party/unittest/googletest/include -I/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/runtimes/../third-party/unittest/googletest -DGTEST_NO_LLVM_SUPPORT=1 -DGTEST_HAS_RTTI=0 -I/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/runtimes/../third-party/unittest/googlemock/include -I/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/runtimes/../third-party/unittest/googlemock -I/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/include -I/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/lib -I/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/lib/sanitizer_common -DSANITIZER_COMMON_NO_REDEFINE_BUILTINS -fno-rtti -O2 -Werror=sign-compare -Wno-gnu-zero-variadic-macro-arguments -gline-tables-only -m64 -c -o SANITIZER_TEST_OBJECTS.sanitizer_dense_map_test.cpp.x86_64.o /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/lib/sanitizer_common/tests/sanitizer_dense_map_test.cpp
In file included from /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/lib/sanitizer_common/tests/sanitizer_dense_map_test.cpp:12:
In file included from /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/map:60:
In file included from /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_tree.h:64:
In file included from /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/allocator.h:46:
In file included from /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/x86_64-linux-gnu/c++/9/bits/c++allocator.h:33:
In file included from /usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/ext/new_allocator.h:33:
/usr/lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/new:173:33: error: exception specification in declaration does not match previous declaration
  173 | _GLIBCXX_NODISCARD inline void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
      |                                 ^
/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_placement_new.h:20:14: note: previous declaration is here
   20 | inline void *operator new(__sanitizer::usize sz, void *p) { return p; }
      |              ^
1 error generated.
4.841 [43/9/4] Generating SANITIZER_TEST_OBJECTS.sanitizer_format_interceptor_test.cpp.x86_64.o
4.985 [43/8/5] Generating SANITIZER_TEST_OBJECTS.sanitizer_flags_test.cpp.x86_64.o
5.978 [43/7/6] Generating SANITIZER_TEST_OBJECTS.sanitizer_atomic_test.cpp.x86_64.o
6.804 [43/6/7] Generating SANITIZER_TEST_OBJECTS.sanitizer_ioctl_test.cpp.x86_64.o
7.349 [43/5/8] Generating SANITIZER_TEST_OBJECTS.gmock-all.cc.x86_64.o
7.795 [43/4/9] Generating SANITIZER_TEST_OBJECTS.sanitizer_addrhashmap_test.cpp.x86_64.o
7.946 [43/3/10] Generating SANITIZER_TEST_OBJECTS.sanitizer_array_ref_test.cpp.x86_64.o
12.583 [43/2/11] Generating SANITIZER_TEST_OBJECTS.sanitizer_allocator_test.cpp.x86_64.o
13.792 [43/1/12] Generating SANITIZER_TEST_OBJECTS.gtest-all.cc.x86_64.o
ninja: build stopped: subcommand failed.
FAILED: runtimes/CMakeFiles/runtimes-test-depends /home/buildbot/buildbot-root/gcc-no-asserts/build/runtimes/CMakeFiles/runtimes-test-depends 
cd /home/buildbot/buildbot-root/gcc-no-asserts/build/runtimes/runtimes-bins && /usr/bin/cmake/bin/cmake --build /home/buildbot/buildbot-root/gcc-no-asserts/build/runtimes/runtimes-bins/ --target runtimes-test-depends --config Release
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/133329