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[libc++] Enable sized deallocation when building operator new shims on Apple #134152

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Merged
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May 6, 2025
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[libc++] Enable sized deallocation when building operator new shims on Apple #134152

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4 changes: 3 additions & 1 deletion libcxx/utils/ci/apple-install-libcxx.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -119,7 +119,9 @@ for arch in ${architectures}; do
step "Building shims to make libc++ compatible with the system libc++ on Apple platforms when running the tests"
shims_library="${build_dir}/${arch}/apple-system-shims.a"
# Note that this doesn't need to match the Standard version used to build the rest of the library.
xcrun clang++ -c -std=c++2b -target ${target} "${llvm_root}/libcxxabi/src/vendor/apple/shims.cpp" -static -o "${shims_library}"
# Also note that we explicitly enable sized deallocation when building the shims to ensure that we provide as
# many symbols as possible.
xcrun clang++ -c -std=c++2b -fsized-deallocation -target ${target} "${llvm_root}/libcxxabi/src/vendor/apple/shims.cpp" -static -o "${shims_library}"

step "Building libc++.dylib and libc++abi.dylib for architecture ${arch}"
xcrun cmake -S "${llvm_root}/runtimes" \
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