[Sanitizer] If -fsanitize-blacklist= option is not explicitly specified, make Clang look for the default sanitizer-specific blacklist in the resource directory.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175505 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index ba61292acc..ad4fd6cd53 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1543,6 +1543,14 @@ SanitizerArgs::SanitizerArgs(const Driver &D, const ArgList &Args)
       else
         D.Diag(diag::err_drv_no_such_file) << BLPath;
     }
+  } else {
+    // If no -fsanitize-blacklist option is specified, try to look up for
+    // blacklist in the resource directory.
+    std::string BLPath;
+    bool BLExists = false;
+    if (getDefaultBlacklistForKind(D, Kind, BLPath) &&
+        !llvm::sys::fs::exists(BLPath, BLExists) && BLExists)
+      BlacklistFile = BLPath;
   }
 
   // Parse -f(no-)sanitize-memory-track-origins options.