Replace sprintf() with snprintf() (#536)

src/googletest.h

@@ -448,10 +448,11 @@ static inline string Munge(const string& filename) {
   string result;
   while (fgets(buf, 4095, fp)) {
     string line = MungeLine(buf);
-    char null_str[256];
-    char ptr_str[256];
-    sprintf(null_str, "%p", static_cast<void*>(NULL));
-    sprintf(ptr_str, "%p", reinterpret_cast<void*>(PTR_TEST_VALUE));
+    const size_t str_size = 256;
+    char null_str[str_size];
+    char ptr_str[str_size];
+    snprintf(null_str, str_size, "%p", static_cast<void*>(NULL));
+    snprintf(ptr_str, str_size, "%p", reinterpret_cast<void*>(PTR_TEST_VALUE));
 
     StringReplace(&line, "__NULLP__", null_str);
     StringReplace(&line, "__PTRTEST__", ptr_str);

src/stl_logging_unittest.cc

@@ -135,8 +135,9 @@ static void TestSTLLogging() {
     for (int i = 0; i < 100; i++) {
       v.push_back(i);
       if (i > 0) expected += ' ';
-      char buf[256];
-      sprintf(buf, "%d", i);
+      const size_t buf_size = 256;
+      char buf[buf_size];
+      snprintf(buf, buf_size, "%d", i);
       expected += buf;
     }
     v.push_back(100);