On May 12 16:51, Tatsuro MATSUOKA wrote: > I have downdoaded x86_64/cygwin1-20140509.dll.xz and execute gnuplot on gdb First, are you shure this is running under the snapshot? what does `uname -a' print when called right before the below gdb call? > $ gdb src/gnuplot > > Reading symbols from /cygdrive/e/usr/Tatsu/cyg64work/gnuplotcvs/build/src/gnuplot...done. > (gdb) r > Starting program: /cygdrive/e/usr/Tatsu/cyg64work/gnuplotcvs/build/src/gnuplot > [New Thread 9176.0x2614] > [New Thread 9176.0x1494] > > G N U P L O T > Version 5.0 patchlevel alpha last modified 2014-05-11 > > Copyright (C) 1986-1993, 1998, 2004, 2007-2014 > Thomas Williams, Colin Kelley and many others > > gnuplot home: http://www.gnuplot.info > mailing list: gnuplot-beta@lists.sourceforge.net > faq, bugs, etc: type "help FAQ" > immediate help: type "help" (plot window: hit 'h') > > Terminal type set to 'qt' > gnuplot> plot sin(x) > [New Thread 9176.0x1b50] > [New Thread 9176.0x269c] > [New Thread 9176.0x2780] > > Program received signal SIGSEGV, Segmentation fault. > 0x000000007782a5a0 in vsprintf_s () from /cygdrive/c/Windows/system32/ntdll.dll > (gdb) bt > #0 0x000000007782a5a0 in vsprintf_s () > from /cygdrive/c/Windows/system32/ntdll.dll > > Is this information helpful? Not really. We can't quite trust the information returned for frames in one of the OS DLLs, but if this is really a vsprintf_s call, it's weird since no Cygwin application would call a vsprintf functions from ntdll.dll, if it's linked correctly. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat