RFR: 8348106: Catch C++ exception in Java_sun_awt_windows_WTaskbarPeer_setOverlayIcon

Sergey Bylokhov serb at openjdk.org
Sat Feb 8 04:05:21 UTC 2025


On Wed, 5 Feb 2025 18:40:07 GMT, Rajat Mahajan <rmahajan at openjdk.org> wrote:

> **Issue:**
> The JNI method `Java_sun_awt_windows_WTaskbarPeer_setOverlayIcon `calls `CreateIconFromRaster `that can throw a C++ exception.
> 
> The C++ exception must be caught and must not be allowed to escape the JNI method. The call to `CreateIconFromRaster `has to wrapped into a try-catch block.
> 
> **Solution:**
> 
> Added exception handling to make sure any exception from `CreateIconFromRaster `is handled properly.
> 
> Testing done.

It would be good to check what type of exception the methods chain can throw, is it only std::bad_alloc()? if yes, then we can use TRY + CATCH_BAD_ALLOC. If we can get another exception, we should figure out how we can report this error to the user.

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PR Comment: https://git.openjdk.org/jdk/pull/23470#issuecomment-2644484873


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