X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=unittests%2FSupport%2FYAMLParserTest.cpp;h=480a5739f44464092d8901e536e4cf0ec8042fd4;hb=b21d9aebba7e45ddcbce61dd501000049cefb335;hp=e88427ac09d3eee87da3eae92eba93f37178d304;hpb=93210e847a1496b24cef881723e57c489082dcfe;p=oota-llvm.git

diff --git a/unittests/Support/YAMLParserTest.cpp b/unittests/Support/YAMLParserTest.cpp
index e88427ac09d..480a5739f44 100644
--- a/unittests/Support/YAMLParserTest.cpp
+++ b/unittests/Support/YAMLParserTest.cpp
@@ -16,11 +16,17 @@
 
 namespace llvm {
 
+static void SuppressDiagnosticsOutput(const SMDiagnostic &, void *) {
+  // Prevent SourceMgr from writing errors to stderr 
+  // to reduce noise in unit test runs.
+}
+
 // Checks that the given input gives a parse error. Makes sure that an error
 // text is available and the parse fails.
 static void ExpectParseError(StringRef Message, StringRef Input) {
   SourceMgr SM;
   yaml::Stream Stream(Input, SM);
+  SM.setDiagHandler(SuppressDiagnosticsOutput);
   EXPECT_FALSE(Stream.validate()) << Message << ": " << Input;
   EXPECT_TRUE(Stream.failed()) << Message << ": " << Input;
 }