mingw: avoid a buffer overrun in `needs_hiding()`

When this function is passed a path with a trailing slash, it runs right
over the end of that path.

Let's fix this.

Co-authored-by: Alexandr Miloslavskiy <redacted>
Signed-off-by: Johannes Schindelin <redacted>
Signed-off-by: Junio C Hamano <redacted>

diff --git a/compat/mingw.c b/compat/mingw.c
index 738f0a826a51b850fcc93f0cadbf707c7eb0b492..f76ba3d750c806711c2291fabf2d81e18b8ca259 100644 (file)
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -363,6 +363,8 @@ static inline int needs_hiding(const char *path)
                        /* ignore trailing slashes */
                        if (*path)
                                basename = path;
+                       else
+                               break;
                }
 
        if (hide_dotfiles == HIDE_DOTFILES_TRUE)