58191 - Wstring passed from C++ to Java with extra garbage symbols

Status: VERIFIED FIXED

(Core Graveyard :: Java to XPCOM Bridge, defect, P3)

Description

[Alexei V. Mokeev]

If XPCOM component has some method with "out" parameter wstring,
(for eg. void TestWString(out wstring i);)
And somebody tried to call this method from Java, then extra 
garbage symbols will be passed to Java.

For example if in native code you put "Some test string" then
in Java code you may got "Some test string?w0w0.."

Suggested reason:

In bcJavaMarshalToolkit::UnMarshalElement
"size of buffer" used to construct new jstring, but
really "size of buffer" = length * sizeof(PRUnichar) + 2
So we should use length = ("size of buffer" - 2)/sizeof(PRUnichar)
to construct jstring via env->NewString method.

Comment 1

[Igor Kushnirskiy]

fixed integrated into the trunc

Comment 2

[Alexei V. Mokeev]

Work now. Mark VERIFIED