src/windows/native/java/lang/ProcessEnvironment_md.c

@@ -33,13 +33,18 @@
 {
     int i;
     jmethodID String_init_ID;
     jbyteArray bytes;
     jbyte *blockA;
+    jclass class_for_method;
+    jclass class_for_object;
 
+    class_for_method = JNU_ClassString(env);
+    CHECK_NULL_RETURN(class_for_method, NULL);
+
     String_init_ID =
-        (*env)->GetMethodID(env, JNU_ClassString(env), "<init>", "([B)V");
+        (*env)->GetMethodID(env, class_for_method, "<init>", "([B)V");
     CHECK_NULL_RETURN(String_init_ID, NULL);
 
     blockA = (jbyte *) GetEnvironmentStringsA();
     if (blockA == NULL) {
         /* Both GetEnvironmentStringsW and GetEnvironmentStringsA

@@ -55,11 +60,13 @@
             ;
 
     if ((bytes = (*env)->NewByteArray(env, i)) == NULL) return NULL;
     (*env)->SetByteArrayRegion(env, bytes, 0, i, blockA);
     FreeEnvironmentStringsA(blockA);
-    return (*env)->NewObject(env, JNU_ClassString(env),
+    class_for_object = JNU_ClassString(env);
+    CHECK_NULL_RETURN(class_for_object, NULL);
+    return (*env)->NewObject(env, class_for_object,
                              String_init_ID, bytes);
 }
 
 /* Returns a Windows style environment block, discarding final trailing NUL */
 JNIEXPORT jstring JNICALL