running java with LD_DEBUG-tracing

[David Holmes]

On 18/12/2019 7:43 pm, Baesken, Matthias wrote:
> Hello, I  recently worked a bit with  the  "verbose debugging information"  output  about operations of the   dynamic linker  (to sort out some lib loading issues) .
> See
> 
> https://docs.oracle.com/cd/E19683-01/816-1386/chapter3-33/index.html
> http://man7.org/linux/man-pages/man8/ld.so.8.html
> 
>    about the LD_DEBUG  flag.
> 
> 
> By chance I noticed  the following  output when running a trivial Java program  :
> 
> LD_DEBUG=libs     /linuxx86_64/output-jdk-test/images/jdk/bin/java   Test
>    . . .
>       12241:
>       12241:             /linuxx86_64/output-jdk-test/images/jdk/lib/libjava.so: error: symbol lookup error: undefined symbol: Java_jdk_internal_reflect_Reflection_getCallerClass (fatal)
>       12241:
> 
> What is wrong with  "Java_jdk_internal_reflect_Reflection_getCallerClass"  ?
> Does the error message  occur because of  the naming  Java_jdk_internal_reflect_Reflection_getCallerClass__  with the added "__"  at the end of the method  (Reflection.c) ?

That definitely looks like an error in the C source to me. The ending 
"__" should not be there. How is this working ??

David

> 
> 
> Best regards, Matthias
> 
>