Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 2014 by get_interesting_headers raises IndexError with C++ end-of-file whitespace change

What version are you running?

What's the URL of the page containing the problem?

What steps will reproduce the problem?
1. Create a non-trivial (more than a few dozen lines) C++ source file with two newlines after the last function definition (revision 1)
2. Change the above file to add or remove newlines to the end of the file
3. Post a diff covering the change from step 2 to reviewboard
4. Attempt to view the diff (View Diff link)

What is the expected output? What do you see instead?
Expected: the diff viewer
Actual: IndexError in get_interesting_headers, where it accesses 'lines'

What operating system are you using? What browser?
Ubuntu. Any browser.

Please provide any additional information below.

I fixed the problem locally by wrapping 'if is_modified_file: / ... / else: / ...' with 'try: / ... / except IndexError: / raise StopIteration'.
(Sorry, I don't have a clean diff against 1.5.4 to post)

Based on the surrounding code and method names, the code in question is trying to get a context function name.

If your diff is trivial (only this file), the whole view-diff page refuses to load. If the diff is non-trivial, the asynchronous diff fetching will only fail for files with that type of change--however, it will prevent viewing any diff chunks for that file.

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