Hi, were you able to discover something? I don't see anything in gd, but I did study it very hard.
Ondrej On Mon, May 20, 2013 at 4:08 PM, Niels Thykier <ni...@thykier.net> wrote: > 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]) > > > > _______________________________________________ > pkg-GD-devel mailing list > pkg-gd-de...@lists.alioth.debian.org > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-gd-devel > -- Ondřej Surý <ond...@sury.org>
