llvm-project

9abb344e - [Darwin][Driver] Avoid duplicate -lc++ with -fsanitize=fuzzer (#161304)

[Darwin][Driver] Avoid duplicate -lc++ with -fsanitize=fuzzer (#161304) On Darwin, duplicate `-l` options cause a warning to be printed. Invoking clang as clang++ and using `-fsanitize=fuzzer` will cause `-lc++` to be passed twice to the linker, causing a warning. i.e. AddCXXStdlibLibArgs is called twice in this case: 1) https://github.com/llvm/llvm-project/blob/19c4e86f3e8582c3f087a9fec5ac036838e58ec4/clang/lib/Driver/ToolChains/Darwin.cpp#L743 because `ShouldLinkCXXStdlib(Args)` is true. 2) The subject of this PR We now skip adding the -lc++ argument if `ShouldLinkCXXStdlib(Args)` (since that means the other path already added it). rdar://136431775