[llvm-branch-commits] [clang] [Clang] Add support for the `-fsanitize=concurrency` runtime (PR #225781)

[Yaxun Liu via llvm-branch-commits]

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@@ -1813,6 +1835,8 @@ collectSanitizerRuntimes(Compilation &C, const ToolChain &TC,
       StaticRuntimes.push_back("ubsan_standalone");
     }
   }
+  if (!SanArgs.needsSharedRt() && NeedsCsanRt)
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yxsamliu wrote:

CSan is only built as a static runtime, but this skips it when `-shared-libsan` is used. The instrumented program will then link without `libclang_rt.csan`. Could we always link the static CSan runtime, like DFSan, or reject this option and add a test?

https://github.com/llvm/llvm-project/pull/225781