JDK-8036003: Add variable not to separate debug information. (original) (raw)

Daniel D. Daugherty daniel.daugherty at oracle.com
Mon Mar 3 19:20:38 UTC 2014

On 3/3/14 12:11 PM, Omair Majid wrote:

Hi,

* Daniel D. Daugherty <daniel.daugherty at oracle.com> [2014-03-03 09:57]: On 3/1/14 4:08 PM, Mike Duigou wrote:

If we can put debuginfo into external files why would we ever want unstripped binaries? We deliver minimal stripped binaries so that can have stack traces with some amount of information in them when the debuginfo files are not available. We have not yet figured out how to implement minimal stripping on Windows so Windows hserrpid files have no symbols in them when the debuginfo bundles are not present. Am I reading it right that when tools (like RPM) strip the debug information from these binaries, hotspot will break completely when it tries to generate a stack trace on crash?

Not quite. If you follow this process:

then you can still get symbols in your crashes as long as you have BOTH libjvm.so and libjvm.debuginfo. However, if you are in a situation where you don't have libjvm.debuginfo, then you do not get symbols in your crashes.

When I did the Full Debug Symbols (FDS) project, I copied complete debug info from libjvm.so -> libjvm.debuginfo and left minimal debug info in libjvm.so so that you could still get symbols on crashes on Linux and Solaris when the libjvm.debuginfo files were not present.

Dan

Thanks, Omair

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