After upgrading cscope from 15.5 to 15.5-r1 cscope becomes a zombie after performing a search from within vim and makes following searches from within the same vim session fail. Downgrading to 15.5 makes the problem disappear. Reproducible: Always Steps to Reproduce: 1. Start vim 2. Add a cscope database (f.e. :cs add cscope.out) 3. Do a search (f.e. :cs f s main) 4. Do another search (f.e. :cs f s main) Actual Results: After step 3 cscope became a zombie 23776 pts/5 00:00:00 vi 23777 pts/5 00:00:00 cscope <defunct> After step 4 i got: E262: error reading cscope connection 0 E259: no matches found for cscope query s of main Expected Results: After step 3 cscope should not have terminated. After step 4 i should have seen the search results. Portage 2.0.51-r3 (default-linux/x86/2004.2, gcc-3.3.4, glibc-2.3.4.20040808-r1, 2.6.10-rc2 i686) ================================================================= System uname: 2.6.10-rc2 i686 AMD Athlon(tm) XP 2600+ Gentoo Base System version 1.4.16 Autoconf: sys-devel/autoconf-2.59-r5 Automake: sys-devel/automake-1.8.5-r1 Binutils: sys-devel/binutils-2.15.90.0.1.1-r3 Headers: sys-kernel/linux26-headers-2.6.8.1 Libtools: sys-devel/libtool-1.5.2-r7 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-O2 -pipe -march=athlon-xp -mmmx -msse -m3dnow -mfpmath=sse -fomit-frame -pointer" CHOST="i686-pc-linux-gnu" COMPILER="" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3/s hare/config /usr/share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/ dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/c onfig/ /usr/share/texmf/xdvi/ /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O2 -pipe -march=athlon-xp -mmmx -msse -m3dnow -mfpmath=sse -fomit-fra me-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms" GENTOO_MIRRORS="ftp://cs.ubishops.ca/pub/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="3dnow X alsa apache2 avi bash-completition berkdb bitmap-fonts bzlib caps c dr crypt cscope cups divx4linux dvd encode f77 flac foomaticdb fortran ftp gdbm gif gpm gtk gtk2 icq imagemagick imap imlib innodb java jikes jpeg junit lesstif f libg++ libwww mad maildir mbox mikmod mime mmap mmx mpeg mysql mysqli ncurses nls nocardbus nocd nptl offensive oggvorbis opengl oscar pam pcntl pcre pdflib p erl php png posix python quicktime readline samba sasl sdl session sharedmem sla ng sockets spell spl sse ssl svga sysvipc tcpd tetex tiff truetype unicode usb v hosts videos x86 xine xml2 xmms xv xvid zlib"
Works now. Magic? Maybe it was related to one of the ebuilds that got updated meanwhile...
ok, seems it was just coincidence... But i tracked it down now. In 15.5-noclobber-tempfile-rexotec.patch we have this code for reopening the temporary file: (void) fclose(refsfound); - if ( (refsfound = myfopen(temp1, "wb")) == NULL) { + if ( (refsfound = myfopen(temp1, "w+xb")) == NULL) { This obviously fails since we just closed the file temp1, but it's still there, thus the O_EXCL flag prevents us from reopening the file. As a quickfix I put a call to unlink() after fclose(), but i guess it would make more sense to replace the fclose()/myfopen() sequence with a ftruncate()/frewind() sequence (I didn't look at myfopen(), so I may be talking nonsense here...).
Bjorn is this still an issue with the updated -r3 ebuild?
Yes, it is. I also noticed that it is not only vim, but consecutive searches within the same cscope session in general. When executing more than one query in the ncurses interface, only the first one shows any results. I'll attach a strace of the cscope process, any other information wanted?
Created attachment 45804 [details] strace of failing cscope $ strace -o cscope.strace -fF cscope -l >> 0main cscope: 1 lines test.c main 1 int main() { >> 0main Cannot reopen temporary file cscope: 1 lines
Please sync and remerge -r3.
Works now, did a good number of tests this time ;)
