Various minor cctest fixes to make ASAN a bit happier.

test/cctest/test-parsing.cc

Index: test/cctest/test-parsing.cc
diff --git a/test/cctest/test-parsing.cc b/test/cctest/test-parsing.cc
index 05fea0bbb617ba0a9b06f140f8a144df122fd712..170ec76a14e01998fe74d7834e45977c0dc29091 100644
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -388,8 +388,7 @@ TEST(PreParseOverflow) {
       reinterpret_cast<uintptr_t>(&marker) - 128 * 1024);
 
   size_t kProgramSize = 1024 * 1024;
-  i::SmartArrayPointer<char> program(
-      reinterpret_cast<char*>(malloc(kProgramSize + 1)));
+  i::SmartArrayPointer<char> program(i::NewArray<char>(kProgramSize + 1));
   memset(*program, '(', kProgramSize);
   program[kProgramSize] = '\0';