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Tom de Vries 521894aa4b [gdb/symtab] Handle invalid partial DIE reference
When reverting commit 9cfd2b89bd "[gdb/testsuite] Fix
gdb.arch/amd64-entry-value-paramref.S", we run into an internal-error:
...
(gdb) file amd64-entry-value-paramref^M
Reading symbols from amd64-entry-value-paramref...^M
src/gdb/dwarf2/read.c:18903: internal-error: could not find partial DIE
  0x1b7 in cache [from module amd64-entry-value-paramref]^M

A problem internal to GDB has been detected,^M
further debugging may prove unreliable.^M
...
because of invalid dwarf.

In contrast, when using -readnow, we have:
...
(gdb) file -readnow amd64-entry-value-paramref
Reading symbols from amd64-entry-value-paramref...
Expanding full symbols from amd64-entry-value-paramref...
Dwarf Error: Cannot find DIE at 0x1b7 referenced from DIE at 0x11a \
  [in module amd64-entry-value-paramref]
(gdb)
...

Change the internal error into a Dwarf Error, such that we have:
...
(gdb) file amd64-entry-value-paramref^M
Reading symbols from amd64-entry-value-paramref...^M
Dwarf Error: Cannot not find DIE at 0x1b7 \
  [from module amd64-entry-value-paramref]^M
^M
(No debugging symbols found in amd64-entry-value-paramref)^M
(gdb)
...

Build and tested on x86_64-linux.

gdb/ChangeLog:

2020-08-04  Tom de Vries  <tdevries@suse.de>

	PR symtab/23270
	* dwarf2/read.c (find_partial_die): Change internal error into Dwarf
	Error.
2020-08-04 11:16:37 +02:00
bfd Automatic date update in version.in 2020-08-04 00:00:06 +00:00
binutils Unify Solaris procfs and largefile handling 2020-07-30 15:41:50 +02:00
config Unify Solaris procfs and largefile handling 2020-07-30 15:41:50 +02:00
contrib contrib: Update dg-extract-results.* from gcc 2020-05-15 11:41:22 +01:00
cpu Add markers for binutils 2.35 branch 2020-07-04 10:16:22 +01:00
elfcpp Add markers for binutils 2.35 branch 2020-07-04 10:16:22 +01:00
etc
gas MSP430: Remove unused -md GAS option 2020-08-03 16:05:48 +01:00
gdb [gdb/symtab] Handle invalid partial DIE reference 2020-08-04 11:16:37 +02:00
gdbserver Unify Solaris procfs and largefile handling 2020-07-30 15:41:50 +02:00
gdbsupport Unify Solaris procfs and largefile handling 2020-07-30 15:41:50 +02:00
gnulib Unify Solaris procfs and largefile handling 2020-07-30 15:41:50 +02:00
gold [GOLD] Power10 stub selection 2020-07-27 22:31:37 +09:30
gprof Unify Solaris procfs and largefile handling 2020-07-30 15:41:50 +02:00
include For DWARF v5 Dwarf Package Files (.dwp files), the section identifier encodings have changed. This patch updates dwarf2.h to contain the new encodings. (see http://dwarfstd.org/doc/DWARF5.pdf, section 7.3.5). 2020-07-29 16:33:07 +01:00
intl Regen with blessed automake-1.15.1 2020-02-20 13:02:24 +10:30
ld Use xmalloc rather than malloc 2020-08-03 10:59:38 +09:30
libctf libctf: compilation failure on MinGW due to missing errno values 2020-07-26 16:11:36 -07:00
libdecnumber Run autoreconf -vf throughout 2020-07-29 16:03:55 -04:00
libiberty Sync config, include and libiberty with GCC 2020-06-24 16:52:48 -07:00
opcodes x86: Add {disp16} pseudo prefix 2020-07-30 16:13:17 -07:00
readline Update readline/README to mention patchlevel 2020-06-30 15:17:07 -06:00
sim Run autoreconf -vf throughout 2020-07-29 16:03:55 -04:00
texinfo
zlib Merge changes from GCC for the config/ directory 2020-02-19 17:51:24 +00:00
.cvsignore
.gitattributes
.gitignore
ar-lib
ChangeLog PKG_CHECK_MODULES: Check if $pkg_cv_[]$1[]_LIBS works 2020-07-28 03:56:34 -07:00
compile
config-ml.in
config.guess Update top level config files with copies from the official repository. 2020-01-18 13:43:19 +00:00
config.rpath
config.sub Update top level config files with copies from the official repository. 2020-01-18 13:43:19 +00:00
configure config/debuginfod.m4: Use PKG_CHECK_MODULES 2020-07-24 15:16:20 -04:00
configure.ac config/debuginfod.m4: Use PKG_CHECK_MODULES 2020-07-24 15:16:20 -04:00
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS Move gdbserver to top level 2020-02-07 08:42:25 -07:00
Makefile.def Change gdbserver to use existing gdbsupport 2020-03-12 13:32:16 -06:00
Makefile.in Change gdbserver to use existing gdbsupport 2020-03-12 13:32:16 -06:00
Makefile.tpl
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
multilib.am
README
README-maintainer-mode
setup.com
src-release.sh Move gdbserver to top level 2020-02-07 08:42:25 -07:00
symlink-tree
test-driver
ylwrap

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.