[analyzer] Allow suppressing diagnostics reported within the 'std' namespace

This is controlled by the 'suppress-c++-stdlib' analyzer-config flag.
It is currently off by default.

This is more suppression than we'd like to do, since obviously there can
be user-caused issues within 'std', but it gives us the option to wield
a large hammer to suppress false positives the user likely can't work
around.

llvm-svn: 178513

1 files changed, 6 insertions, 0 deletions

diff --git a/clang/lib/StaticAnalyzer/Core/AnalyzerOptions.cpp b/clang/lib/StaticAnalyzer/Core/AnalyzerOptions.cpp
index 65faa10134d..465f408e7f2 100644
--- a/clang/lib/StaticAnalyzer/Core/AnalyzerOptions.cpp
+++ b/clang/lib/StaticAnalyzer/Core/AnalyzerOptions.cpp
@@ -158,6 +158,12 @@ bool AnalyzerOptions::shouldSuppressInlinedDefensiveChecks() {
                           /* Default = */ true);
 }
 
+bool AnalyzerOptions::shouldSuppressFromCXXStandardLibrary() {
+  return getBooleanOption(SuppressFromCXXStandardLibrary,
+                          "suppress-c++-stdlib",
+                          /* Default = */ false);
+}
+
 int AnalyzerOptions::getOptionAsInteger(StringRef Name, int DefaultVal) {
   SmallString<10> StrBuf;
   llvm::raw_svector_ostream OS(StrBuf);