0001159: Byte-code produced for _resin_compat_class_0

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Category

Severity

Reproducibility

Date Submitted

Last Update

0001159

[Resin]

minor

always

05-31-06 13:22

06-08-06 18:32

Reporter

sam

View Status

public

Assigned To

ferg

Priority

high

Resolution

fixed

Status

closed

Product Version

3.0.19

Summary

0001159: Byte-code produced for _resin_compat_class_0

Description

(rep by L Plaetinck)

We are working on a Java profiling tool and ran into some problems when
instrumenting some of the Resin classes.One of the offending classes
seems to be com.caucho.doc.JavadocRedirectServlet, especially the method
_resin_compat_class0():

private static java.lang.Class _resin_compat_class_0();
  Code:
   Stack=2, Locals=0, Args_size=0
   0: getstatic 0000221; //Field
_resin_compat_class_0:Ljava/lang/Class;
   3: dup
   4: ifnonnull 18
   7: pop
   8: ldc_w 0000219; //String com.caucho.doc.JavadocRedirectServlet
   11: invokestatic 0000225; //Method
java/lang/Class.forName:(Ljava/lang/String;)Ljava/lang/Class;
   14: dup
   15: putstatic 0000221; //Field
_resin_compat_class_0:Ljava/lang/Class;
   18: areturn
   19: aconst_null
   20: areturn
  Exception table:
   from to target type
     0 19 19 Class java/lang/ClassNotFoundException

Since this seems to be a regular try - catch implementation, one would
expect to see the code "astore_0" between instruction 18 and 19. After
instrumentation, this leads to a verify error "Inconsistent stack height
2 != 1"
Any information on how this was compiled would be appreciated.

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Issue History
Date Modified	Username	Field	Change
05-31-06 13:22	sam	New Issue
06-01-06 08:22	sam	Project	Quercus => Resin
06-08-06 18:32	ferg	Assigned To	=> ferg
06-08-06 18:32	ferg	Status	new => closed
06-08-06 18:32	ferg	Resolution	open => fixed
06-08-06 18:32	ferg	Fixed in Version	=> 3.0.20

Mantis 1.0.0rc3[^]

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