On 2009-02-11 14:01-0700 Orion Poplawski wrote: > Fedora is moving to gcc 4.4 with Fedora 11. I'm trying to build plplot > 5.9.2 and getting the following error:
> fci = 0xbf947ae1 Hi Orion: Just in case you didn't know this already, what distinguishes an FCI from UCS4 code is the most significant bit is turned on (see http://plplot.sourceforge.net/docbook-manual/plplot-html-5.9.2/characters.html#fci). So the above hex pattern does qualify as an FCI, and that is why you got into the FCI part of the code. However, other than that marker bit, the other thing that distinguishes FCI's is only their 3 lowest order hex fields are set. So valid values look like 0x80000???. Clearly, the above value is completely invalid if interpreted as an FCI rather than an ordinary UCS4 character. However, the maximum UCS4 is supposed to be 0x10FFFF so the above is not consistent with UCS4 either. Thus, I think the basic problem is that garbage is getting into the array we use to hold a combination of UCS4 and FCI 32-bit unsigned integers. > Seems like I need to track down where fci is getting set incorrectly? Yes or investigate where an ordinary UCS4 code is being set to garbage. Have you had success before with your ppc hardware? If you have never tested before on that hardware platform, it could be an endian issue for PLplot. Another possibility is it could be an endian issue in some/all of the gcc-4.4 suite of compilers. Sorry, I don't have access to gcc-4.4 to do some complementary tests here. What languages do you have to disable before the problem goes away? If only f77 (or f77 and f95) have the issue, but C does not, then that greatly limits where we have to look for the issue. I assume your fortran compiler is gfortran (i.e., part of the suite of gcc-based compilers), but could you confirm that? Also, if gfortran, is its version consistent with the gcc compiler version? Does valgrind show any memory management issues? Such issues are one way to get garbage in the array of unsigned 32-bit integers (a combination of UCS4 and FCI) that are interpreted for plotting. Hope some of these ideas and questions help you to figure out the source of the problem. 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 __________________________ ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
