Thanks for the report. This will be fixed in the textutils, eventually. I don't have time right now.
I'll gladly consider patches. Torsten Landschoff <[EMAIL PROTECTED]> writes: | Hi textutils developers, | | I am writing to you because we (Debian) got a release critical bug | against our textutils package. It seems that tsort does not behave as | most people would expect. | | Note: I am not the maintainer of that package but a member of the | Quality Assurance team. | | As the behaviour of tsort conforms to the documentation this is not | really a bug. Problem is that the other unices I tried this on report | the error but nonetheless they try to generate senseful output on | stdout. | | This is from the manpage of tsort on SuSE Linux: | | If the graph contains a cycle (and therefore cannot be properly | sorted), one of the arcs in the cycle is ignored and the sort | continues. Cycles are reported on standard error. | | SuSE seems to use the BSD version of tsort. On Solaris there is no | reference to this problem in the manpage but output is generated anyway. | | As Debian tries to stay compatible with other Linux versions we are | thinking of replacing tsort with the BSD version but as we ship | GNU/Linux we would like a new GNU version which fixes this better. | | So please consider changing the behaviour of tsort. If you lack the | manpower I could help with the patch but I am out of reach starting this | Friday for a week. | | Here is the original bugreport: | | > Date: Fri, 27 Aug 1999 12:53:44 +0200 | > From: "J.H.M. Dassen (Ray)" <[EMAIL PROTECTED]> | > To: [EMAIL PROTECTED] | > Subject: textutils: tsort behaves unexpectedly | > | > Package: textutils | > Version: 2.0-2 | > Severity: important | > | > [Severity motiviation: this breaks behaviour expected by some source builds, | > e.g. of netkit-telnet-ssl.] | > | > Consider the following data: | > auth.o auth.o | > misc.o misc.o | > ssl.o ssl.o | > sslapp.o sslapp.o | > ssl.o misc.o | > ssl.o auth.o | > auth.o misc.o | > ssl.o auth.o | > misc.o auth.o | > auth.o ssl.o | > sslapp.o ssl.o | > auth.o misc.o | > ssl.o sslapp.o | > | > Running tsort on this results in these errors on stderr | > [this is correct: a true topological sort does not exists when there are | > cycles] | > tsort: -: input contains a loop: | > | > tsort: auth.o | > tsort: misc.o | > and no output no stdout. | > | > In 2.1, tsort was built from bsd sources rather than the GNU textutils. That | > version also gives warnings on stderr | > tsort: cycle in data | > tsort: ssl.o | > tsort: sslapp.o | > tsort: cycle in data | > tsort: misc.o | > tsort: auth.o | > tsort: ssl.o | > tsort: cycle in data | > tsort: auth.o | > tsort: misc.o | > but does produce output on stdout | > [namely a fewest-cycles sort of the input] | > sslapp.o | > ssl.o | > misc.o | > auth.o | > | > This behaviour is expected by a number of source builds, which contain an | > optimisation in library generation: | > ar [some flags] `lorder *.o | tsort` | > | > Please make GNU's tsort behave like the BSD one, or coordinate with the | > bsdmainutils maintainer to switch back to the BSD version. | > | > -- System Information | > Debian Release: potato | > Kernel Version: Linux jcn206a 2.2.12-int2.2.11.2 #3 Fri Aug 27 | > 10:02:05 CEST 19 99 i586 unknown | > | > Versions of the packages textutils depends on: | > ii libc6 2.1.2-0pre11 GNU C Library: Shared libraries and timezone | | Torsten Landschoff for the Debian QA Group
