Customer experiences crashes in SignatureHandlerLibrary::add
The stack trace looks like this.

They are running the testcase from bug 6305546.
java -Xint -classpath dacapo-beta050224.jar Harness -s small chart


----------------- lwp# 1 / thread# 1 --------------------
 ff31fb84 _lwp_kill (6, 0, ffbfd6b0, 75c8, 8540, 8400) + 8
 ff2b6d10 abort (6c00, fefce000, fee76fe0, ff023794, 0, 338d0) + 100
 fee70c1c void os::abort(int) (1, 0, ff00277c, fefce000, 74c8, 7400) + 58
 feeff200 void VMError::report_and_die() (0, ff029eb8, ff02376c, 1, fee750a8, ff02376c) + c84
 fea73480 JVM_handle_solaris_signal (b, ffbfddb0, ffbfdaf8, 7800, ff022790, 369f0) + aac
 ff385b0c __sighndlr (b, ffbfddb0, ffbfdaf8, fea7299c, 0, 0) + c
 ff37f804 call_user_handler (b, ffbfddb0, ffbfdaf8, 0, 0, 0) + 234
 ff37f9b4 sigacthandler (b, ffbfddb0, ffbfdaf8, 0, 156, 156) + 64
 --- called from signal handler with signal 11 (SIGSEGV) ---
 fea831fc void SignatureHandlerLibrary::add(methodHandle) (ffbfdf84, 0, 0, ff0023a8, 9400, 80000000) + 358
 fea82d70 void InterpreterRuntime::prepare_native_call(JavaThread*,methodOopDesc*) (369f0, b4956238, 8bd4, 8c00, fefce000, 6) + 1c4
 f900ba58 ???????? (e49057e0, ff0267ac, 0, 4, 8800, ffbfe010)
 f90058fc ???????? (80000000, ff0267ac, 0, f90142f0, 8800, ffbfe0b8)
 f9005874 ???????? (e3577a90, ff0267ac, 0, f900dfb0, 8800, ffbfe178)
 f9005764 ???????? (e3512310, b4a00010, 0, f9013f30, 8800, ffbfe208)
 f9005c2c ???????? (e3478b18, ff0267ac, 0, f90143e0, 8800, ffbfe290)
 f9005764 ???????? (e3466640, ff0267ac, 0, f9013ee0, 8800, ffbfe380)
 f9005764 ???????? (e3466640, ff0267ac, 0, f9014188, 8800, ffbfe420)
 f9005764 ???????? (2000, 2, 0, f9014188, ffb8c200, ffbfe5a8)
 f9000218 ???????? (ffbfe690, ffbfe898, a, b49ea4b0, f900a840, ffbfe8c8)
 fe999d8c void JavaCalls::call_helper(JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (1, 369f0, ffbfe8c0, ffbfe6a0, 4, ffbfe898) + 5a0
 fea337c4 oopDesc*Reflection::invoke(instanceKlassHandle,methodHandle,Handle,int,objArrayHandle,BasicType,objArrayHandle,int,Thread*) (0, 1, 4, 1, ff
bfe9e8, fefce000) + 14a8
 feaff9cc oopDesc*Reflection::invoke_method(oopDesc*,Handle,objArrayHandle,Thread*) (36fd4, ffbfe9e4, 36fcc, 369f0, 36fd0, 0) + 268
 feafd9f8 JVM_InvokeMethod (36aac, 0, 0, ffbfec44, ff023154, 369f0) + 2bc
 fe770358 Java_sun_reflect_NativeMethodAccessorImpl_invoke0 (36aac, ffbfebc0, ffbfec4c, 0, ffbfec44, 8000) + 10
 f900bb08 ???????? (369f0, ffbfec4c, ffbfebc0, ffffff80, 80000000, 1a7c)
 f900baac ???????? (80000000, ff0267ac, 0, c, 8800, ffbfebd8)
 f9005874 ???????? (e3453e08, ff0267ac, 0, f90142a0, 8800, ffbfec70)
 f9005874 ???????? (e3453e20, b4842180, 0, f9013ee0, 8800, ffbfecf0)
 f9005d3c ???????? (e3453778, ff0267ac, 0, f90143e0, 8800, ffbfed80)
 f9005874 ???????? (e34478f8, ff0267ac, 0, f9013ee0, 8800, ffbfee28)
 f9005764 ???????? (80000000, ff0267ac, 0, f9014140, 8800, ffbfeee0)
 f9005764 ???????? (2000, 2, 0, f90142a0, ffb8c0f8, ffbfef58)
 f9000218 ???????? (ffbff040, ffbff1a0, a, b49caae8, f900a840, ffbff128)
 fe999d8c void JavaCalls::call_helper(JavaValue*,methodHandle*,JavaCallArguments*,Thread*) (1, 369f0, ffbff120, ffbff050, 4, ffbff1a0) + 5a0
 feadb898 jni_CallStaticVoidMethod (ff023154, 36fc4, 36bc0, 369f0, 36bb8, 34b10) + 500
 00012224 main (375a0, 343f9, ff01a9f0, 1d8, fead0ee4, 1) + 115c
 000110b0 _start (0, 0, 0, 0, 0, 0) + 108