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[Bug binutils/23928] ar crash within LLVMgold.so module
From: |
nickc at redhat dot com |
Subject: |
[Bug binutils/23928] ar crash within LLVMgold.so module |
Date: |
Thu, 29 Nov 2018 06:00:01 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=23928
--- Comment #4 from Nick Clifton <nickc at redhat dot com> ---
Hi Werner
> I installed all necessary debug symbols; however, the very last call is
> still shown as `??' in the backtrace (deep in dlopened stuff).
What about the function before the '??'. That will probably give you a
clue as to where the problem is occurring.
> What do you
> recommend to make ar and LLVMgold.so spit out more debugging information?
Recompile them with the -g debugging option enabled. (I am guessing that
they were compiled without it, at least in the environment that you are using).
> BTW, what I would like to have for such situations is an option to disable
> plugins with a command line option, for example `--plugin=""'.
Sadly I do not believe that such an option exists. You can however capture
the command line being used to invoke the plugin, and then just replay it
with the plugin options removed.
> Finally, where can I find a description of the differences between
> `LLVMgold.so' and gcc's `liblto_plugin'? Even a more intensive search in
> the internet didn't show up anything useful...
I do not think that such a document exists. The only real recourse is to
read the source code for each of them, and compare how they work.
Cheers
Nick
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