[clang-scan-deps] strip the --serialize-diagnostics argument

This ensures that clang-scan-deps won't write out diagnostics when
scanning dependencies.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@372444 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 0 deletions

diff --git a/lib/Tooling/ArgumentsAdjusters.cpp b/lib/Tooling/ArgumentsAdjusters.cpp
index 942b35df45..f56d08c47b 100644
--- a/lib/Tooling/ArgumentsAdjusters.cpp
+++ b/lib/Tooling/ArgumentsAdjusters.cpp
@@ -57,6 +57,22 @@ ArgumentsAdjuster getClangStripOutputAdjuster() {
   };
 }
 
+ArgumentsAdjuster getClangStripSerializeDiagnosticAdjuster() {
+  return [](const CommandLineArguments &Args, StringRef /*unused*/) {
+    CommandLineArguments AdjustedArgs;
+    for (size_t i = 0, e = Args.size(); i < e; ++i) {
+      StringRef Arg = Args[i];
+      if (Arg == "--serialize-diagnostics") {
+        // Skip the diagnostic output argument.
+        ++i;
+        continue;
+      }
+      AdjustedArgs.push_back(Args[i]);
+    }
+    return AdjustedArgs;
+  };
+}
+
 ArgumentsAdjuster getClangStripDependencyFileAdjuster() {
   return [](const CommandLineArguments &Args, StringRef /*unused*/) {
     CommandLineArguments AdjustedArgs;