CVise fills temp directory on Windows

[jketema]

I'm running into an issue where CVise fills up the temp directory on my Windows system completely and where I have to wipe it manually. It looks like CVise is not very good at immediately cleaning up the temporary directories it's creating, which leaves a lot of data behind. With some long running passes this sometimes means my disk fills up completely. The passes are long running, because I'm trying to reduce a C++ source file that is about 30MB in size.

At the moment, for example, I see a directory cvise-ClangBinarySearchPass-replace-function-def-with-decl-qw57m91m which is about 70GB in size, and contains more than 4000 subdirectories.

I happily help debug and fix the problem, but I'll need some pointers on where to start with that.

[marxin]

Again, thanks for the report, it's great to have somebody who runs C-Vise on Windows target which is experimental right now. I would start here:

cvise/cvise/utils/testing.py

Lines 35 to 39 in 16a34b2

	assert 'cvise' in str(name)
	try:
	shutil.rmtree(name)
	except OSError:
	pass

where I would remove the except block and catch potential issues. The function itself should be called here:

cvise/cvise/utils/testing.py

Lines 341 to 344 in 16a34b2

	def release_folders(self):
	for future in self.futures:
	self.release_folder(future)
	assert not self.temporary_folders

Hopefully, we can make some progress.