We now properly forward the errno value from the child when execvp()
fails, which the parent then uses to for the errno message as well as
including the failed command's name in the message.
We must throw an AbstractMethodError when such a call is executed (not
when the call is compiled), so we compile this case as a call to a
thunk which throws such an error.
Previously, Deflater.deflate would pass Z_SYNC_FLUSH to zlib
unconditionally, which caused the output to be enormous when setInput
was called repeatedly with very small input buffers. In order to
allow zlib to buffer output and thereby maximize compression, we must
use Z_NO_FLUSH until Deflater.finish is called, at which point we
switch to Z_FINISH. We also modify DeflaterOutputStream.close to call
Deflater.finish and write any remaining output to the wrapped stream.
OpenJDK's java.lang.ClassLoader.getResource makes use of
sun.misc.Launcher to load bootstrap resources, which is not
appropriate for the Avian build, so we override it to ensure we get
the behavior we want.
This test covers the case where a local stack slot is first used to
store an object reference and later to store a subroutine return
address. Unfortunately, this confuses the VM's stack mapping code;
I'll be working on a fix for that next.
The new test requires generating bytecode from scratch, since there's
no reliable way to get javac to generate the code we want. Since we
already had primitive bytecode construction code in Proxy.java, I
factored it out so we can reuse it in Subroutine.java.
In commit 7fffba2, I had modified BufferedInputStream.read to keep
reading until in.available() <= 0 or an EOF was reached, but neglected
to update the offset into the destination buffer after each read.
This caused the previously-read data to be overwritten. This commit
fixes that regression.
