re PR libgcj/18036 (Bad interaction between interpreter and Class.forName())

2004-10-18  Andrew Haley  <aph@redhat.com>

        PR java/18036:
        * gnu/gcj/runtime/natStackTrace.cc (fillInStackTrace): Reorganize
        and correct logic used to find interpreter.

From-SVN: r89221

libjava/ChangeLog

+2004-10-18  Andrew Haley  <aph@redhat.com>
+
+	PR java/18036:
+	* gnu/gcj/runtime/natStackTrace.cc (fillInStackTrace): Reorganize
+	and correct logic used to find interpreter.
+	
 2004-10-18  Jeroen Frijters  <jeroen@frijters.net>
 
 	* java/util/logging/LogManager.java

libjava/gnu/gcj/runtime/natStackTrace.cc

@@ -92,9 +92,12 @@ gnu::gcj::runtime::StackTrace::fillInStackTrace (jint maxlen, jint offset)
 	      // less than _Jv_EndOfInterpreter it might be in the
 	      // interpreter: we call _Unwind_FindEnclosingFunction to
 	      // find out.
-	      if ((_Jv_EndOfInterpreter == NULL || pc < _Jv_EndOfInterpreter)
-		  && (_Unwind_FindEnclosingFunction (pc) 
-		      == _Jv_StartOfInterpreter))
+	      if (pc >= _Jv_StartOfInterpreter
+		  && (pc < _Jv_EndOfInterpreter
+		      || _Jv_EndOfInterpreter == NULL))
+		{
+		  if (_Unwind_FindEnclosingFunction (pc) 
+		      == _Jv_StartOfInterpreter)
 		    {
 		      frame[n].interp = (void *) interp_frame->self;
 		      interp_frame = interp_frame->next;
@@ -104,10 +107,10 @@ gnu::gcj::runtime::StackTrace::fillInStackTrace (jint maxlen, jint offset)
 		      // We've found an address that we know is not within
 		      // the interpreter.  We use that to refine our upper
 		      // bound on where the interpreter ends.
-		  if (_Jv_EndOfInterpreter == NULL || pc < _Jv_EndOfInterpreter)
 		      _Jv_EndOfInterpreter = pc;
 		    }
 		}
+	    }
 #endif // INTERPRETER
 
 	}