On Tue, 8 Mar 2022 09:18:01 GMT, Sergey Bylokhov <s...@openjdk.org> wrote:
>> Please review this small patch that fixes a potential memory leak that
>> exception return fails to release allocated `cacheDirs`
>>
>> Test:
>>
>> - [x] jdk_desktop on Linux x86_64
>
> src/java.desktop/unix/native/common/awt/fontpath.c line 938:
>
>> 936: while ((cnt < max) && (cacheDir =
>> (*FcStrListNext)(cacheDirs))) {
>> 937: jstr = (*env)->NewStringUTF(env, (const char*)cacheDir);
>> 938: JNU_CHECK_EXCEPTION_AND_CLEANUP(env,
>> (*FcStrListDone)(cacheDirs));
>
> I think you do not need to create an additional macro here, just inline it
> and call "(*FcStrListDone)(cacheDirs);" directly. Something like:
>
> if (IS_NULL(jstr) {
> (*FcStrListDone)(cacheDirs);
> return;
> }
>
> Note that the "IS_NULL" is used in this file after NewStringUTF. Any
> objections?
Good catch! Elsewhere in this file IS_NULL is always used to check
NewStringUTF, so the existing code was inconsistent in checking for a pending
exception.
Checking for NULL and checking for a pending exception are logically equivalent
as long as the passed in pointer is not NULL.
-------------
PR: https://git.openjdk.java.net/jdk/pull/7691
