add debug info when compiling sanitizer tests

llvm-svn: 222051

libcxx/test/lit.cfg

@@ -435,7 +435,7 @@ class Configuration(object):
             llvm_symbolizer = lit.util.which('llvm-symbolizer',
                                              symbolizer_search_paths)
             # Setup the sanitizer compile flags
-            self.compile_flags += ['-fno-omit-frame-pointer']
+            self.compile_flags += ['-g', '-fno-omit-frame-pointer']
             if sys.platform.startswith('linux'):
                 self.link_flags += ['-ldl']
             if san == 'Address':