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neovim/test/functional/ui
James McCoy de50c003d5 Use vim_strchr(s, c) when c may be NUL (#6656)
As part of the refactoring in #5119, some vim_strchr() were changed to
strchr().  However, vim_strchr() behaves differently than strchr() when
c is NUL, returning NULL instead of a pointer to the NUL.

Revert the strchr() calls where it isn't known whether c is NUL, since
this causes a semantic change the surrounding code doesn't expect.  In
the case of #6650, this led to a heap overrun.

Closes #6650
2017-05-03 10:12:38 +02:00
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