Bug 1201938 - Treat warnings as errors in Linux static analysis builds; r=mystor

browser/config/mozconfigs/linux64/debug-static-analysis-clang

@@ -14,6 +14,9 @@ export CXX="$topsrcdir/clang/bin/clang++"
 # Add the static checker
 ac_add_options --enable-clang-plugin
 
+# Treat warnings as errors (modulo ALLOW_COMPILER_WARNINGS).
+ac_add_options --enable-warnings-as-errors
+
 # Avoid dependency on libstdc++ 4.7
 ac_add_options --enable-stdcxx-compat