When I use btrace to trace the function call in java application, I encount an error "Exception in thread "main" java.lang.VerifyError: Inconsistent stackmap frames at branch target 86". #394
Description
My environment is btrace 1.3.11.3 , java 1.8
My command is as following:
java -Djava.security.egd=file:/dev/./urandom -javaagent:btrace-agent.jar=script=AllMethods.class,scriptOutputFile=app.log -jar app.jar
The error log is as following:
btrace INFO: Redirecting output to app.log
Exception in thread "main" java.lang.VerifyError: Inconsistent stackmap frames at branch target 86
Exception Details:
Location:
org/springframework/boot/loader/jar/JarURLConnection.get(Ljava/net/URL;Lorg/springframework/boot/loader/jar/JarFile;)Lorg/springframework/boot/loader/jar/JarURLConnection; @86: aload_2
Reason:
Type top (current frame, locals[0]) is not assignable to 'java/net/URL' (stack map, locals[0])
Current Frame:
bci: @30
flags: { }
locals: { top, 'org/springframework/boot/loader/jar/JarFile', 'java/lang/String', integer, integer }
stack: { integer }
Stackmap Frame:
bci: @86
flags: { }
locals: { 'java/net/URL', 'org/springframework/boot/loader/jar/JarFile', 'java/lang/String', integer, integer, top, top }
stack: { }
Bytecode:
0x0000000: 1301 7913 018d b801 7d2a 2bb6 004d b800
0x0000010: 4e4d 033e 2c12 151d b600 4f59 3604 9e00
0x0000020: 382c 1d15 04b6 0018 3a05 2b19 05b6 000b
0x0000030: 3a06 1906 c700 0d2b 1905 b800 50b8 0051
0x0000040: b02b 1906 b600 524c 1d15 0412 15b6 0017
0x0000050: 6060 3ea7 ffc1 2c1d b800 533a 05b2 002e
0x0000060: b200 2fb6 0030 b600 3199 001b 1905 b600
0x0000070: 089a 0013 2b19 05b6 0024 b600 549a 0007
0x0000080: b200 55b0 bb00 1459 2a2b 1905 b700 56b0
0x0000090:
Stackmap Table:
full_frame(@20,{Top,Object[#191],Object[#149],Integer},{})
full_frame(@65,{Object[#26],Object[#191],Object[#149],Integer,Integer,Object[#149],Object[#172]},{})
full_frame(@86,{Object[#26],Object[#191],Object[#149],Integer,Integer,Top,Top},{})
full_frame(@132,{Object[#26],Object[#191],Object[#149],Integer,Integer,Object[#97],Top},{})
at org.springframework.boot.loader.jar.Handler.setUseFastConnectionExceptions(Handler.java:352)
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:78)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:46)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
java.lang.InternalError
at sun.instrument.InstrumentationImpl.retransformClasses0(Native Method)
at sun.instrument.InstrumentationImpl.retransformClasses(InstrumentationImpl.java:144)
at com.sun.btrace.agent.Client.retransformLoaded(Client.java:484)
at com.sun.btrace.agent.Client.onExit(Client.java:251)
at com.sun.btrace.agent.FileClient.onCommand(FileClient.java:83)
at com.sun.btrace.BTraceRuntime$ConsumerWrapper.accept(BTraceRuntime.java:174)
at com.sun.btrace.BTraceRuntime$ConsumerWrapper.accept(BTraceRuntime.java:162)
at com.sun.btrace.org.jctools.queues.BaseMpscLinkedArrayQueue.drain(BaseMpscLinkedArrayQueue.java:674)
at com.sun.btrace.BTraceRuntime$4.run(BTraceRuntime.java:442)
at java.lang.Thread.run(Thread.java:748)