diff -r 000000000000 -r 6474c204b198 build/unix/mozconfig.asan
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/build/unix/mozconfig.asan	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+MOZ_AUTOMATION_L10N_CHECK=0
+
+. "$topsrcdir/build/mozconfig.common"
+
+# Use Clang as specified in manifest
+export CC="$topsrcdir/clang/bin/clang -fgnu89-inline"
+export CXX="$topsrcdir/clang/bin/clang++"
+export LLVM_SYMBOLIZER="$topsrcdir/clang/bin/llvm-symbolizer"
+
+# Mandatory flags for ASan
+export ASANFLAGS="-fsanitize=address -Dxmalloc=myxmalloc -fPIC"
+export CFLAGS="$ASANFLAGS"
+export CXXFLAGS="$ASANFLAGS"
+export LDFLAGS="-fsanitize=address"
+
+# Enable ASan specific code and build workarounds
+ac_add_options --enable-address-sanitizer
+
+# Mandatory options required for ASan builds (both on Linux and Mac)
+export MOZ_DEBUG_SYMBOLS=1
+ac_add_options --enable-debug-symbols
+ac_add_options --disable-install-strip
+ac_add_options --disable-jemalloc
+ac_add_options --disable-crashreporter
+ac_add_options --disable-elf-hack
+
+# Avoid dependency on libstdc++ 4.7
+ac_add_options --enable-stdcxx-compat