Re: [PATCH] [PR 25678] gdb crashes with "internal-error: sect_index_text not initialized" when .text

Simon Marchi
2020-05-14T17:32:59Z

On 2020-05-14 1:22 p.m., mlimber via Gdb-patches wrote:
> I have replicated this bug in gdb versions 10.0.50.20200514-git and also
> 8.2-0ubuntu1~14.04.1. I am using an executable that dynamically links an
> shared object with no text segment, viz., libicudata.so.52.2. (FWIW, lldb-8
> does not crash with this same executable + library.)
>
> I located a patch by Jeremie Courreges-Anglas here:
> https://marc.info/?l=openbsd-ports&m=146569238229407&w=2. I applied said
> patch, rebuilt gdb, and now I can debug the same executable with gdb.
>
> I am not an expert on the inner workings of gdb, but I assume those who
> review this code can better judge the overall soundness of this change.
>
> I did not create a new test, but I can try it if necessary.
>
> I have not previously completed an FSF copyright assignment. I have a
> "request for disclaimer" email prepared to send if so directed by the gdb
> maintainers.
>
> Cheers!
>
> M
>

Hi,

Thanks for the patch. For reference, could you please provide some instructions
on how to replicate this bug? How to compile a minimal test case and the GDB
commands to trigger the bug. It should ideally be put in the commit message to
act as a reference, and it will be useful to write a test.

We'll want a test for sure, so if you want to start writing one it would be
appreciated. I know that writing GDB test is not the most obvious thing to
do when you are not familiar with it, so don't hesitate to ask for help.

Simon