Thanks, Alan. I'll scratch my head over this for a while. Jerry On Aug 23, 2008, at 11:02 PM, Alan W. Irwin wrote:
> On 2008-08-23 18:54-0700 Jerry wrote: > >> There have been some posts about Ada example 19 (both x19a.adb and >> xthick19a.adb) causing problems, possibly on 64-bit systems but not >> 32-bit systems. >> >> Fortunately, example 19 is short. >> >> Unfortunately, example 19 runs fine on my machine, OS X. >> >> Could someone send me detailed info about what happens? On 7/18/08, >> Alan indicated this runtime error: >> >> raised STORAGE_ERROR : stack overflow (or erroneous memory >> access) > > That is the only message that is given. > >> >> This is an Ada exception being raised. Was there a line number >> associated with this output? > > Unfortunately, not. > >> >> I would like to try to find, as exactly as possible, where this >> problem is arising. > > I surrounded the plmap and plmeridians calls with > > if 0 =/0 then > end if; > > then selectively tried > > if 0 =/1 then > > It turns out the first two plmap(null... calls generate no run-time > error, > but that both the plmap(mapform19'Unrestricted_Access... > and plmeridians(mapform19'Unrestricted_Access... calls individually > generate > the above run-time error. > > BTW, I notice the x16a.adb callbacks are specified with a different > access method that does not seem to generate a run-time error, i.e., > > plshades(... plfill'access, True, pltr1'access, cgrid1'Address); > > Is it possible to use that method instead for example 19? > > I simply tried plmap(mapform19'access... > > but that generated a build error of > x19a.adb:113:13: subprogram must not be deeper than access type > x19a.adb:118:19: subprogram must not be deeper than access type > make[2]: *** [examples/ada/CMakeFiles/x19a.dir/x19a.o] Error 1 > > I don't understand why this won't build (probably because my Ada > languague > skills are so limited) since pltr1, for example, is an Ada > procedure similar > to mapform19. > > If there is no easy way to mimic what example 16 does, then at > least I have > pinned down two separate instances of one line of code that > generates the > run-time error, and I hope you can use that to generate a self- > contained > test example that is completely independent of PLplot that I can try. > > Alan > __________________________ > Alan W. Irwin > > Astronomical research affiliation with Department of Physics and > Astronomy, > University of Victoria (astrowww.phys.uvic.ca). > > Programming affiliations with the FreeEOS equation-of-state > implementation > for stellar interiors (freeeos.sf.net); PLplot scientific plotting > software > package (plplot.org); the libLASi project (unifont.org/lasi); the > Loads of > Linux Links project (loll.sf.net); and the Linux Brochure Project > (lbproject.sf.net). > __________________________ > > Linux-powered Science > __________________________ > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
