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[Bug breakpoints/23210] [8.1/8.2 Regression] Bogus Breakpoint address adjusted from 0xf7fe7dd3 to 0xfffffffff7fe7dd3.
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Thu, 31 May 2018 02:32:13 +0000
- Subject: [Bug breakpoints/23210] [8.1/8.2 Regression] Bogus Breakpoint address adjusted from 0xf7fe7dd3 to 0xfffffffff7fe7dd3.
- Auto-submitted: auto-generated
- References: <bug-23210-4717@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=23210
--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Omair Javaid <omjavaid@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5969f0dba74e17c694faf333b120f1e0b95783ed
commit 5969f0dba74e17c694faf333b120f1e0b95783ed
Author: Omair Javaid <omair.javaid@linaro.org>
Date: Sat May 26 05:58:51 2018 +0500
Unset gdbarch significant_addr_bit by default
This patch fixes a bug introduced by fix to AArch64 pointer tagging.
In our fix for tagged pointer support our agreed approach was to sign
extend user-space address after clearing tag bits. This is not same
for all architectures and this patch allows sign extension for
addresses on targets which specifically set significant_addr_bit.
More information about patch that caused the issues and discussion
around tagged pointer support can be found in links below:
https://sourceware.org/ml/gdb-patches/2018-05/msg00000.html
https://sourceware.org/ml/gdb-patches/2017-12/msg00159.html
gdb/ChangeLog:
2018-05-31 Omair Javaid <omair.javaid@linaro.org>
PR gdb/23210
* gdbarch.sh (significant_addr_bit): Default to zero when
not set by target architecture.
* gdbarch.c: Re-generated.
* utils.c (address_significant): Update.
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