[PATCH] D33216: Generate ubsan shared libraries.

[Leo Li via Phabricator via llvm-commits]

aoli added inline comments.


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Comment at: lib/ubsan/CMakeLists.txt:174
+      ARCHS ${UBSAN_SUPPORTED_ARCH}
+      OBJECT_LIBS ${UBSAN_COMMON_RUNTIME_OBJECT_LIBS}
+      RTUbsan_cxx
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vsk wrote:
> aoli wrote:
> > vsk wrote:
> > > Here, it seems like you'd just want 'RTInterception', and not all of '${UBSAN_COMMON_RUNTIME_OBJECT_LIBS}'.
> > Oh, RTInterception was added by accident. I think I'm not using it either. Shall I keep share libraries' `OBJECT_LIBS` just the same as those for static libraries?
> I think it's a good idea to keep the OBJECT_LIBS as close to possible as those for static libraries. Could you double-check that RTInterception isn't needed in just this specific case? I do see some Windows-specific code in lib/ubsan that sets up interceptors.
I just checked again. To compile `clang_rt.ubsan_standalone_cxx` it also requires `RTUbsan`, `RTSanitizerCommon` and `RTSanitizerCommonLibc` but not `RTInterception`. I'd prefer to have only one `clang_rt.ubsan_standalone` which includes  `RTUbsan`, `RTUbsan_cxx ,`RTSanitizerCommon` and `RTSanitizerCommonLibc` now(which is the same as my first change). Because `clang_rt.ubsan_standalone_cxx` will include all libraries in `clang_rt.ubsan_standalone`.

To find the reference to `RTInterception`, I first compiled the shared library without `RTInterception` on my machine and it doesn't generate any error. Then I grepped several APIs shown in interception_win.h and interception_mac.h and it didn't return any result so I suppose the `RTInterception` is not being used in ubsan. The only thing I found was `sanitizer_win_weak_interception.h` which was actually included in `RTSanitizerCommon`. I'm new to LLVM and not quiet familiar with the source code and I'm not sure if I'm doing right.


https://reviews.llvm.org/D33216