Created attachment 170669 [details] Java project which reproduces the problem 1. Start the attached Java project (It is based on the "DocumentLoader.java" example from the 7.1 SDK. So you can just drop the Main.java into your preferred environment if maven is not to your taste.) The example code starts a new LibreOffice Writer process, waits for 30 seconds and then prints the content of the document to sysout via com.sun.star.text.XTextDocument.getText(). 2. To reproduce the problem enter a lone low surrogate into the Writer document. E.g. enter "df09" into the document and then press Alt+X (or Alt+C depending on your locale). 3. Wait until the 30 s timeout has passed. Observed result: ---------------- The example program will exit with the following exception: com.sun.star.lang.DisposedException at com.sun.star.lib.uno.environments.remote.JobQueue.removeJob(JobQueue.java:201) at com.sun.star.lib.uno.environments.remote.JobQueue.enter(JobQueue.java:308) at com.sun.star.lib.uno.environments.remote.JobQueue.enter(JobQueue.java:281) at com.sun.star.lib.uno.environments.remote.JavaThreadPool.enter(JavaThreadPool.java:81) at com.sun.star.lib.uno.bridges.java_remote.java_remote_bridge.sendRequest(java_remote_bridge.java:619) at com.sun.star.lib.uno.bridges.java_remote.ProxyFactory$Handler.request(ProxyFactory.java:145) at com.sun.star.lib.uno.bridges.java_remote.ProxyFactory$Handler.invoke(ProxyFactory.java:129) at com.sun.proxy.$Proxy6.getString(Unknown Source) at com.vector.Main.main(Main.java:28) Caused by: java.io.EOFException at java.base/java.io.DataInputStream.readInt(DataInputStream.java:396) at com.sun.star.lib.uno.protocols.urp.urp.readBlock(urp.java:364) at com.sun.star.lib.uno.protocols.urp.urp.readMessage(urp.java:96) at com.sun.star.lib.uno.bridges.java_remote.java_remote_bridge$MessageDispatcher.run(java_remote_bridge.java:92) The LibreOffice process is still running afterwards but the socket connection is closed. (There is no issue when “closing” the surrogate pair, e.g. for the input 🌉(\ud83c\udf09).) Expected result --------------- The URP bridge is still usable for further requests by the "client" after catching the exception for getText().
Patch to insert the problematic string on F12 into Writer in debug mode: diff --git a/sw/source/uibase/docvw/edtwin.cxx b/sw/source/uibase/docvw/edtwin.cxx index 93560ec91f3b..6dee14bc7668 100644 --- a/sw/source/uibase/docvw/edtwin.cxx +++ b/sw/source/uibase/docvw/edtwin.cxx @@ -1458,6 +1458,13 @@ void SwEditWin::KeyInput(const KeyEvent &rKEvt) if ( getenv("SW_DEBUG") && rKEvt.GetKeyCode().GetCode() == KEY_F12 ) { + // xéx + // std::vector<sal_Unicode> aChars = {0x0078, 0x00e9, 0x0078, 0x0000}; + // x, low surrogate, x + std::vector<sal_Unicode> aChars = {0x0078, 0xdf09, 0x0078, 0x0000}; + rSh.Insert2(OUString(aChars.data())); + return; + if( rKEvt.GetKeyCode().IsShift()) { GetView().GetDocShell()->GetDoc()->dumpAsXml(); That being said, I can reproduce this. CC Stephan (just FYI)
It IMO does not make sense for Writer to allow non-valid Unicode (i.e., lone surrogates) in its content model. Without looking at the example code, the relevant UNO interfaces apparently use the UNO string type to communicate some Writer document content. The UNO string type models "arbitrary-length sequences of Unicode scalar values" (<http://www.openoffice.org/udk/common/man/typesystem.html>), and the UNO bridges generally do not allow to pass data that violates the UNO type system.
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