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From: "lsix at lancelotsix dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/29426] FAIL: gdb.mi/mi-var-invalidate.exp: linteger not
 anymore in scope due to binary changes (unexpected output)
Date: Fri, 29 Jul 2022 15:08:08 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29426

--- Comment #8 from Lancelot SIX <lsix at lancelotsix dot com> ---
Created attachment 14242
  --> https://sourceware.org/bugzilla/attachment.cgi?id=3D14242&action=3Ded=
it
add_varobj_global_flag.patch

This regression also shows an interesting problem.

Currently, when we unload an objfile and find a varobj which is linked to a
block from this objfile, we clear the valid_block pointer to avoid having a
stall pointer.  However by doing this, we loose the ability to distinguish a
varobj tracking a global (no valid_block associated) to a varobj tracking a
local (some valid_block associated).  Later, when we reload a new program a=
nd
try to recreate varobj for globals, we have false positive and also try to
recreate some locals as well.

The attached patch fixes this, but some differences remain whether I ubuntu=
=E2=80=99s
stock GCC or custom built HEAD GCC.

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