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Summary:
Fixes https://bugs.llvm.org/show_bug.cgi?id=31877.
Fixes https://github.com/google/sanitizers/issues/1155.
Enables exceptions in msan/tsan buid of libcxx, and in msan tests.
-fdepfile-entry stuff is a workaround for
https://reviews.llvm.org/D69290 (default blacklist missing from -MMD
output).
Reviewers: pcc, dvyukov
Subscribers: mgorny, christof, #sanitizers, llvm-commits
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D69587
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Summary:
Since neither compiler-rt nor the libc++ we build use exceptions, we
don't need libc++abi to have them either.
This resolves an issue where libFuzzer's private libc++ contains
implementations for __cxa_throw and friends, causing fuzz targets built
with their own C++ library to segfault during exception unwinding.
See https://github.com/google/oss-fuzz/issues/2328.
Reviewers: phosek, EricWF, kcc
Reviewed By: phosek
Subscribers: kcc, dberris, mgorny, christof, llvm-commits, metzman
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D61053
llvm-svn: 359218
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This is another follow up to r354212 which is broken on Darwin when
cross-compiling runtimes to Linux when it ignores the -fuse-ld=lld
linker flag and attempts to use the host linker when performing the
compiler identification. Upon investigation, I noticed that setting
the project with appropriate list of languages makes the error go
away and it shouldn't hurt either.
Differential Revision: https://reviews.llvm.org/D58372
llvm-svn: 354350
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This changes add_custom_libcxx to also build libcxxabi and merges
the two into a static and hermetic library.
There are multiple advantages:
1) The resulting libFuzzer doesn't expose C++ internals and looks
like a plain C library.
2) We don't have to manually link in libstdc++ to provide cxxabi.
3) The sanitizer tests cannot interfere with an installed version
of libc++.so in LD_LIBRARY_PATH.
Differential Revision: https://reviews.llvm.org/D58013
llvm-svn: 354212
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