[Bug ada/25811] [ada] start attempts to set breakpoint on main of previous exec

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=25811

--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=358be6e72d464349e5146095bdb04b96be5734c1

commit 358be6e72d464349e5146095bdb04b96be5734c1
Author: Tom Tromey <tromey@adacore.com>
Date:   Mon Aug 21 09:55:14 2023 -0600

    Read Ada main name from executable, not inferior

    An upstream bug report points out this bug: if the user switches from
    one Ada executable to another without "kill"ing the inferior, then the
    "start" command will fail.

    What happens here is that the Ada "main" name is found in a constant
    string in the executable.  But, if the inferior is running, then the
    process_stratum target reads from the inferior memory.

    This patch fixes the problem by changing the main name code to set
    trust-readonly-sections, causing the target stack to read from the
    executable instead.

    I looked briefly at changing GNAT to emit DW_AT_main_subprogram
    instead, but this looks to be pretty involved.

    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=25811

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