Package: devscripts Version: 2.10.35 Severity: normal Tags: patch User: [EMAIL PROTECTED] Usertags: origin-ubuntu ubuntu-patch intrepid
strace 4.5.17 dropped the separate -F option for following vforks, saying (in its NEWS file) "-F is now deprecated, -f has traced vfork too on Linux for a long time now". This is implemented as follows: case 'F': /* Obsoleted, acts as `-f'. */ case 'f': followfork++; break; The effect of this is that -f -F works like -ff, namely it causes process traces to be written to <filename>.<pid> rather than simply to <filename>. This completely breaks dpkg-depcheck, which expects the whole trace to land in one file. I don't know exactly when 'strace -f' started to follow vfork on Linux, but I suspect it might be this commit, which would make it version 4.4.93: 2003-01-17 Anton Blanchard <[EMAIL PROTECTED]> * util.c [LINUX] (setbpt): Handle SYS_vfork like SYS_fork. * linux/syscall.h (SYS_socket_subcall): 256 also for POWERPC. At any rate I tried a trivial test program on Debian stable and I've confirmed that 'strace -f' follows vfork there, so I think the most reasonable fix is simply to drop -F from dpkg-depcheck's strace invocation. Patch attached (including a changelog entry but obviously not this bug number). Thanks, -- Colin Watson [EMAIL PROTECTED]
Index: debian/changelog =================================================================== --- debian/changelog (revision 1614) +++ debian/changelog (working copy) @@ -73,6 +73,13 @@ * bts: document that the cache auto-cleaning is overzealous on noatime partitions. Patch from intrigeri <[EMAIL PROTECTED]>. (Closes: #488486) + [ Colin Watson ] + * dpkg-depcheck: Remove -F in order to be compatible with current strace. + I'm not sure exactly when plain 'strace -f' started being able to follow + vfork on Linux, but it's at least as long ago as Debian 4.0, possibly + strace 4.4.93 which would place it before Debian 3.1, so a dependency + doesn't seem to be necessary. + -- Mohammed Adnène Trojette <[EMAIL PROTECTED]> Sat, 30 Aug 2008 19:58:43 +0200 devscripts (2.10.35) unstable; urgency=low Index: scripts/dpkg-depcheck.pl =================================================================== --- scripts/dpkg-depcheck.pl (revision 1614) +++ scripts/dpkg-depcheck.pl (working copy) @@ -391,7 +391,7 @@ $file = $opts{"strace-output"} || `tempfile -p depcheck`; chomp $file; $file =~ s%^(\s)%./$1%; - my @strace_cmd=('strace', '-e', 'trace=open,execve', '-f', '-F', + my @strace_cmd=('strace', '-e', 'trace=open,execve', '-f', '-q', '-o', $file, @_); $ENV{'LD_PRELOAD'} = $trace_preload; $ENV{'LC_ALL'}="C" if $opts{"C"};