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asan uses mmap() internally, so allow mmap() calls in asan builds
PiperOrigin-RevId: 358802336 Change-Id: I26fa891cc9fffcfd32f6b18a63b39d6f2282ff7d
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@ -205,6 +205,10 @@ PolicyBuilder& PolicyBuilder::AllowLlvmSanitizers() {
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}
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if constexpr (sapi::sanitizers::IsASan()) {
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AllowSyscall(__NR_sigaltstack);
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// asan uses a custom allocator that runs mmap under the hood. For example:
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// https://github.com/llvm/llvm-project/blob/596d534ac3524052df210be8d3c01a33b2260a42/compiler-rt/lib/asan/asan_allocator.cpp#L980
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// https://github.com/llvm/llvm-project/blob/62ec4ac90738a5f2d209ed28c822223e58aaaeb7/compiler-rt/lib/sanitizer_common/sanitizer_allocator_secondary.h#L98
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AllowMmap();
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}
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return *this;
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}
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