> On Jul 21, 2010, at 11:53 AM, Tim Edwards wrote: >> Chris wrote: > . . . >> > Xcircuit segfaults on startup on my system. I've attached a report which >> > includes a trace and much more info. >> > The software begins to draw a window but it crashes so fast I can't see >> > how >> > far it gets. I see some gold color and >> > maybe the widgets and it's all gone in a half second. >> > >> > I can help if you need more info. At one tie I used to know tcl.tk fairly >> > well. I write code on Solaris and Linux >> > all day long but know less about Mac OS and so far nothing about xcircuit. >> >> > Date/Time: 2010-07-13 21:54:23.807 -0700 >> > OS Version: Mac OS X 10.6.4 (10F569) >> > Report Version: 6 >> > >> > Thread 0 Crashed: Dispatch queue: com.apple.main-thread >> > 0 libX11.6.dylib 0x000000010c794e03 >> > CmapRecForColormap + >> > 110 >> > 1 libX11.6.dylib 0x000000010c7952cd XcmsCCCOfColormap >> > + >> > 42 >> > 2 libX11.6.dylib 0x000000010c735a5f XAllocNamedColor >> > + 55 >> > 3 xcircuit.so 0x000000010c681a55 CvtStringToPixel >> > + >> > 130 >> > 4 xcircuit.so 0x000000010c681b2e xc_alloccolor + 61 >> > 5 xcircuit.so 0x000000010c67e0dc >> > build_app_database + >> > 68 >> > 6 xcircuit.so 0x000000010c67f054 GUI_init + 2056 >> >> Extracting the relevant parts of your crash report, it looks like it >> crashed under Mac OS due to an invalid colormap. In GUI_init(), the >> colormap is set before calling build_app_database(), so that should not >> be the problem. The colormap is set by the line >> >> cmap = Tk_Colormap(tkwind); >> >> so my suspicion is that under Mac OS, unlike other systems, Tk does not >> report a valid colormap initially, although it is supposed to do so. I'm >> not really sure what to do about it, since it appears to be an error in >> the Tk implementation for the Mac (Tk_MapWindow() doesn't actually wait >> for the window to be mapped?). However, you could try changing line >> 9275 of tclxcircuit.c from >> >> cmap = Tk_Colormap(tkwind); >> to >> cmap = DefaultColormap(dpy, DefaultScreen(dpy)); > > I'm seeing the same problem as Chris. I tried your suggestion, and it > crashes immediately on the call to DefaultColormap. > > Tk_Colormap is returning NULL. > > I'm looking for some examples to see if this is a problem in other Tk based > apps on OS X, but I'm not a Tk expert... > > Kevin Brock > > >> which may work to bypass the Tk structures and ask for the colormap >> directly from X11. Let me know if it makes a difference.
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