Control: tags -1 confirmed help On 2013-05-20 15:06, Colin Watson wrote: > Package: mscgen > Version: 0.20-2 > Severity: serious > User: ubuntu-de...@lists.ubuntu.com > Usertags: origin-ubuntu saucy > > mscgen fails to build in unstable as follows: > > make check-TESTS > make[3]: Entering directory `/«PKGBUILDDIR»/build/test' > testinput0.msc > Error: gdoTextHeight: Could not read font (GDFONTPATH=) > FAIL: renderercheck.sh > ==================================================== > 1 of 1 test failed > Please report to michael.mcternan.2...@cs.bris.ac.uk > ==================================================== > make[3]: *** [check-TESTS] Error 1 > > If it helps, you can see a corresponding Ubuntu build log here: > > > https://launchpadlibrarian.net/140264375/buildlog_ubuntu-saucy-i386.mscgen_0.20-2build2_FAILEDTOBUILD.txt.gz > > I don't quite know what's happening here, as running the tests by hand > seems to succeed. > > Thanks, >
I can confirm the failure in a sid chroot, but the failure is non-deterministic. I have seen 2 successful builds out of 5 or so. Furthermore the test that fails is also non-deterministic. Your log has testinput0.msc, but I saw 17, 5 and one starting with 2 (forgot the exact number for that one). The frequency of the failures appears to be fairly random at first glance (for testinput0.msc). I have observed 0 to 496 successful runs between each failure. The average number of successes between failures appears to be around 36 runs (based on 90 observations). So anyone wanting to replicate this may want to setup a: "while mscgen -Tpng <in-file> ; do : ; done" Dear pkg-gd developers, do you have any hints as to why gdImageStringFT would be non-deterministic[1]? As far as I can tell, it receives the following arguments: NULL, rect (int array[8], init'ed to 8 zeroes), pen (0 or 0xff - failures tend to be 0), "helvetica", 11.0, 0, 0, 0, "gHELLOWt" The pen value is (AFAICT) always a value returned by gdImageColorAllocate. mscgen will always allocate ADRAW_COL_BLACK and ADRAW_COL_WHITE (in that order) prior to loading any other colors[2]. ~Niels [1] Call context: http://anonscm.debian.org/gitweb/?p=collab-maint/mscgen.git;a=blob;f=src/gd_out.c;h=64d82b27817dccae83c24ce6a450306be11fcfe4;hb=2ca7e6af2dad9f34d6d1466174b13e646d8ab630#l225 [2] src/adraw.h: ADRAW_COL_WHITE = 0x00ffffff, src/adraw.h: ADRAW_COL_BLACK = 0x00000000, These are passed like: gdImageColorAllocate(context->img, (col & 0xff0000) >> 16, (col & 0x00ff00) >> 8, (col & 0x0000ff) >> 0); (see the getColorRef function in same file linked to in [1]) -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
