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Accepting request 677153 from home:tomdevries:branches:openSUSE:Factory

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- Add dwz-low-mem-Fix-DW_OP_GNU_parameter_ref-handling-in-read_exprloc.patch
  to fix assert on cc1 binary from gcc bootstrap-lto [swo#24195].

OBS-URL: https://build.opensuse.org/request/show/677153
OBS-URL: https://build.opensuse.org/package/show/devel:tools:compiler/dwz?expand=0&rev=13
This commit is contained in:
Michael Matz 2019-03-07 14:58:26 +00:00 committed by Git OBS Bridge
parent 64e961df8d
commit 7c84e101c1
3 changed files with 66 additions and 1 deletions
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57
dwz-low-mem-Fix-DW_OP_GNU_parameter_ref-handling-in-read_exprloc.patch Normal file
View File

@ -0,0 +1,57 @@
[low-mem] Fix DW_OP_GNU_parameter_ref handling in read_exprloc
Function read_exprloc contains a loop that marks all parents of a
DW_OP_GNU_parameter_ref reference with CK_BAD. The loop however has no
private loop variable, so the ref variable, initially pointing to the
referenced DIE, ends up after the loop pointing to the root parent of the
reference instead. Consequently, the code after the loop, intended to be
executed for the referenced DIE, is instead executed for the root parent of
the referenced DIE.
Fix this by moving the loop alap.
2019-02-14 Tom de Vries <tdevries@suse.de>
PR dwz/24195
* dwz.c (read_exprloc): Move loop marking parents with CK_BAD alap.
---
dwz.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/dwz.c b/dwz.c
index d348418..6e6b6fb 100644
--- a/dwz.c
+++ b/dwz.c
@@ -1492,6 +1492,15 @@ read_exprloc (DSO *dso, dw_die_ref die, unsigned char *ptr, size_t len,
}
if (op == DW_OP_call2)
ref->die_op_call2_referenced = 1;
+ if (unlikely (low_mem))
+ {
+ ref->die_referenced = 1;
+ /* As .debug_loc adjustment is done after
+ write_info finishes, we need to keep the referenced
+ DIEs around uncollapsed. */
+ if (need_adjust)
+ ref->die_intercu_referenced = 1;
+ }
if (ref->die_ck_state == CK_KNOWN)
{
ref->die_ck_state = CK_BAD;
@@ -1504,15 +1513,6 @@ read_exprloc (DSO *dso, dw_die_ref die, unsigned char *ptr, size_t len,
}
else
ref->die_ck_state = CK_BAD;
- if (unlikely (low_mem))
- {
- ref->die_referenced = 1;
- /* As .debug_loc adjustment is done after
- write_info finishes, we need to keep the referenced
- DIEs around uncollapsed. */
- if (need_adjust)
- ref->die_intercu_referenced = 1;
- }
die->die_ck_state = CK_BAD;
if (need_adjust)
*need_adjust = true;

6
dwz.changes
View File

@ -1,3 +1,9 @@
-------------------------------------------------------------------
Mon Feb 18 14:31:42 UTC 2019 - tdevries@suse.com
- Add dwz-low-mem-Fix-DW_OP_GNU_parameter_ref-handling-in-read_exprloc.patch
to fix assert on cc1 binary from gcc bootstrap-lto [swo#24195].
-------------------------------------------------------------------
Wed Apr 11 11:02:06 UTC 2018 - rguenther@suse.com

4
dwz.spec
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@ -1,7 +1,7 @@
#
# spec file for package dwz
#
# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
@ -27,6 +27,7 @@ Group: Development/Tools/Building
Source: %{name}-%{version}.tar.xz
Patch0: dwz-0.12-ignore-nobits.patch
Patch1: dwz-0.12-DW_OP_GNU_variable_value.patch
Patch2: dwz-low-mem-Fix-DW_OP_GNU_parameter_ref-handling-in-read_exprloc.patch
BuildRequires: libelf-devel
BuildRequires: xz
@ -52,6 +53,7 @@ is needed.
%setup -q -n %{name}
%patch0 -p1
%patch1 -p1
%patch2 -p1
%build
make %{?_smp_mflags} CFLAGS="%{optflags}"