Stacktrace?

bobef Joined: 06/05/05 Posts: 86

Posted: 04/08/09 05:07:26 Hi, I see that Tango now has stacktrace built in. That's great addition! What is the status of that? Is it usable already and if so - how? Maybe a little example? Thanks, bobef

Author	Message
torhu Joined: 03/31/06 Posts: 69	Posted: 04/08/09 10:54:00 -- Modified: 04/08/09 10:56:42 by torhu With DMD 1.041 and later, you only need to import tango.core.stacktrace.TraceExceptions?. Here's what I do to be able to use older compilers too: // Workaround for a bug in dmd < 1.041. // http://d.puremagic.com/issues/show_bug.cgi?id=2673 static if (__VERSION__ < 1041) { debug import tango.core.stacktrace.StackTrace; debug version = bug2673; } debug import tango.core.stacktrace.TraceExceptions; /* ... */ // in main() version (bug2673) rt_setTraceHandler(&basicTracer); Like the old stacktrace, it still won't show the call where the exception actually originated. To get that you need a debug build of the base tango lib. But linking to tango-base-dmd-d.lib won't work due to issue #1574, but might work on other platforms than Windows.
bobef Joined: 06/05/05 Posts: 86	Posted: 04/08/09 13:42:04 Thanks, but I don't see in your example how you actually get the trace info? For example I want something like this (pseudo code): try { someCodeThatCausesException(); } catch(Object o) { Stdout(o.stackTrace.toString).newline.flush; }
torhu Joined: 03/31/06 Posts: 69	Posted: 04/08/09 16:04:48 -- Modified: 04/08/09 16:06:34 by torhu Sorry, forgot that part. :) catch(Exception e) { e.writeOut((char[] s) { Trace.format(s); }); Trace.flush(); } By the way, you need Tango svn to get traced exceptions, I use rev. 4498.
tomni Joined: 08/25/08 Posts: 30	Posted: 05/08/09 13:37:44 When I try to compile your example with DMD 1.043 with the latest Tango trunk version I'll get this error: dsss_objs/D/tango.core.stacktrace.StackTrace?.o: In function `_D5tango4core10stacktrace10StackTrace24dladdrSymbolizeFrameInfoFKS9Exception9FrameInfoPS5tango4core10stacktrace10StackTrace12TraceContextAaZb': /usr/local/dmd/bin/../import/tango/core/stacktrace/StackTrace.d:231: undefined reference to `dladdr' collect2: ld returned 1 exit status Help appreciated?
larsivi Joined: 03/27/04 Posts: 614	Posted: 05/08/09 15:34:58 Seems like you need to link libdl?
tomni Joined: 08/25/08 Posts: 30	Posted: 05/09/09 09:51:37 :-) thx. solved.