$ JAVASWARMGDB=/opt/gnu/gdb-5.0/bin/gdb /opt/swarm/swarm-2001-03-28/bin/javaswarm StartHeatbugs 
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This GDB was configured as "sparc-sun-solaris2.8"...(no debugging symbols found)...
(gdb) run
Starting program: /usr/local/java/jdk1.3/jre/bin/sparc/native_threads/java 'StartHeatbugs'
(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...[New LWP 1]
[New LWP 2]
[New LWP 3]
[New LWP 4]
(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...warning: Lowest section in /usr/lib/libw.so.1 is .hash at 00000074

(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...[New LWP 5]
(no debugging symbols found)...[New LWP 6]

Program received signal SIGSEGV, Segmentation fault.
[Switching to LWP 3]
0xf4b62de8 in swarm_lookup_module () at SwarmEnvironment.m:271
Line number 271 out of range; SwarmEnvironment.m has 270 lines.
(gdb) bt
#0  0xf4b62de8 in swarm_lookup_module () at SwarmEnvironment.m:271
#1  0xf4b5df90 in language_independent_class_name_for_typename () at SwarmEnvironment.m:271
#2  0xf4b5e1c4 in language_independent_class_name_for_objc_class () at SwarmEnvironment.m:271
#3  0xf4b5b8b8 in find_java_wrapper_class () at SwarmEnvironment.m:271
#4  0xf4b5c4fc in swarm_directory_objc_find_class_java () at SwarmEnvironment.m:271
#5  0xf4b5b9dc in swarm_directory_objc_ensure_java () at SwarmEnvironment.m:271
#6  0xfae1aa74 in Java_swarm_objectbase_ProbeLibraryImpl_getProbeForVariable_00024inClass__Ljava_lang_String_2Ljava_lang_Class_2 (env=0x282e4, jobj=0xffbeea24, 
    aVar=0xffbeea20, aClass=0xffbeea1c) at objectbase_stubs.m:737
#7  0x6fd58 in ?? () at SwarmEnvironment.m:271
#8  0x6d1c8 in ?? () at SwarmEnvironment.m:271
#9  0x6cf20 in ?? () at SwarmEnvironment.m:271
#10 0x6cedc in ?? () at SwarmEnvironment.m:271
#11 0x6cedc in ?? () at SwarmEnvironment.m:271
#12 0x6cedc in ?? () at SwarmEnvironment.m:271
#13 0xfe7a499c in __1cMStubRoutinesG_code1_ () at SwarmEnvironment_getters.m:131
#14 0xfe549d44 in __1cJJavaCallsLcall_helper6FpnJJavaValue_pnMmethodHandle_pnRJavaCallArguments_pnGThread__v_ () at SwarmEnvironment_getters.m:131
#15 0xfe5499f0 in __1cJJavaCallsEcall6FpnJJavaValue_nMmethodHandle_pnRJavaCallArguments_pnGThread__v_ () at SwarmEnvironment_getters.m:131
#16 0xfe551af4 in __1cKjni_invoke6FpnHJNIEnv__pnJJavaValue_pnI_jobject_nLJNICallType_pnK_jmethodID_pnSJNI_ArgumentPusher_pnGThread__v_ ()
    at SwarmEnvironment_getters.m:131
#17 0xfe55e164 in jni_CallStaticVoidMethod () at SwarmEnvironment_getters.m:131
#18 0x12134 in main () at SwarmEnvironment.m:271
#19 0x111ec in _start () at SwarmEnvironment.m:271
(gdb)