RFR: 8131136: java/awt/font/JNICheck/JNICheck.sh issue warning on core-libs code

[Daniel Jeliński]

On Wed, 11 Jun 2025 13:18:47 GMT, Daniel Jeliński <djelinski at openjdk.org> wrote:

> Add an exception check after a JNI static method call, and re-enable checks for CallStatic in JNICheck.sh test.
> 
> I verified that the JNICheck test is passing on all headless and headful platforms I had access to (Windows, Linux and Mac). Other tier1-3 tests also continue to pass.

src/java.base/share/native/libnet/net_util.c line 77:

> 75:     CHECK_NULL_RETURN(s, JNI_VERSION_1_2);
> 76:     preferIPv4Stack = (*env)->CallStaticBooleanMethod(env, iCls, mid, s);
> 77:     JNU_CHECK_EXCEPTION_RETURN(env, JNI_VERSION_1_2);

The exception check is technically not necessary because no other JNI methods are called before the function exits, but it wasn't always the case.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25754#discussion_r2140117524