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To: vim-dev@vim.org
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Subject: Patch 7.3.009
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Fcc: outbox
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From: Bram Moolenaar <Bram@moolenaar.net>
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Mime-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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------------
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Patch 7.3.009
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Problem: Win32: Crash on Windows when using a bad argument for strftime().
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(Christian Brabandt)
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Solution: Use the bad_param_handler(). (Mike Williams)
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Files: src/os_win32.c
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*** ../vim-7.3.008/src/os_win32.c 2010-08-15 21:57:27.000000000 +0200
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--- src/os_win32.c 2010-09-21 17:02:54.000000000 +0200
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***************
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*** 1615,1620 ****
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--- 1615,1649 ----
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return TRUE;
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}
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+ #if ((defined(__MINGW32__) || defined (__CYGWIN32__)) && \
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+ __MSVCRT_VERSION__ >= 0x800) || (defined(_MSC_VER) && _MSC_VER >= 1400)
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+ /*
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+ * Bad parameter handler.
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+ *
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+ * Certain MS CRT functions will intentionally crash when passed invalid
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+ * parameters to highlight possible security holes. Setting this function as
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+ * the bad parameter handler will prevent the crash.
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+ *
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+ * In debug builds the parameters contain CRT information that might help track
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+ * down the source of a problem, but in non-debug builds the arguments are all
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+ * NULL/0. Debug builds will also produce assert dialogs from the CRT, it is
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+ * worth allowing these to make debugging of issues easier.
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+ */
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+ static void
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+ bad_param_handler(const wchar_t *expression,
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+ const wchar_t *function,
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+ const wchar_t *file,
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+ unsigned int line,
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+ uintptr_t pReserved)
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+ {
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+ }
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+
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+ # define SET_INVALID_PARAM_HANDLER \
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+ ((void)_set_invalid_parameter_handler(bad_param_handler))
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+ #else
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+ # define SET_INVALID_PARAM_HANDLER
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+ #endif
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+
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#ifdef FEAT_GUI_W32
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/*
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***************
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*** 1627,1632 ****
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--- 1656,1664 ----
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extern int _fmode;
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#endif
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+ /* Silently handle invalid parameters to CRT functions */
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+ SET_INVALID_PARAM_HANDLER;
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+
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/* Let critical errors result in a failure, not in a dialog box. Required
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* for the timestamp test to work on removed floppies. */
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SetErrorMode(SEM_FAILCRITICALERRORS);
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***************
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*** 2103,2108 ****
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--- 2135,2143 ----
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extern int _fmode;
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#endif
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+ /* Silently handle invalid parameters to CRT functions */
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+ SET_INVALID_PARAM_HANDLER;
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+
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/* Let critical errors result in a failure, not in a dialog box. Required
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* for the timestamp test to work on removed floppies. */
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SetErrorMode(SEM_FAILCRITICALERRORS);
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*** ../vim-7.3.008/src/version.c 2010-09-21 16:56:29.000000000 +0200
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--- src/version.c 2010-09-21 17:27:36.000000000 +0200
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***************
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*** 716,717 ****
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--- 716,719 ----
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{ /* Add new patch number below this line */
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+ /**/
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+ 9,
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/**/
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--
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Wizards had always known that the act of observation changed the thing that
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was observed, and sometimes forgot that it also changed the observer too.
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Terry Pratchett - Interesting times
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/// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
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/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
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\\\ download, build and distribute -- http://www.A-A-P.org ///
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\\\ help me help AIDS victims -- http://ICCF-Holland.org ///
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