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@@ -171,6 +171,23 @@ os.tempfolder = function()
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local filetocheck = os.tmpname()
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os.remove(filetocheck)
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+ -- https://blogs.msdn.microsoft.com/vcblog/2014/06/18/c-runtime-crt-features-fixes-and-breaking-changes-in-visual-studio-14-ctp1/
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+ -- The C runtime (CRT) function called by os.tmpname is tmpnam.
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+ -- Microsofts tmpnam implementation in older CRT / MSVC releases is defective.
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+ -- tmpnam return values starting with a backslash characterize this behavior.
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+ -- https://sourceforge.net/p/mingw-w64/bugs/555/
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+ -- MinGW tmpnam implementation is forwarded to the CRT directly.
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+ -- https://sourceforge.net/p/mingw-w64/discussion/723797/thread/55520785/
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+ -- MinGW links to an older CRT release (msvcrt.dll).
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+ -- Due to legal concerns MinGW will never use a newer CRT.
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+ --
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+ -- Make use of TEMP to compose the temporary filename if an old
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+ -- style tmpnam return value is detected.
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+ if filetocheck:sub(1, 1) == "\\" then
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+ local tempfolder = os.getenv("TEMP")
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+ return tempfolder .. filetocheck
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+ end
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+
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local randname = "MTTempModFolder_" .. math.random(0,10000)
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local backstring = filetocheck:reverse()
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return filetocheck:sub(0, filetocheck:len() - backstring:find(DIR_DELIM) + 1) ..
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nOOb3167