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Tom de Vries 043bcbaf81 [gdb/testsuite] Fix xfail handling in gdb.threads/gcore-thread.exp
When running test-case gdb.threads/gcore-thread.exp on openSUSE Tumbleweed,
I run into these XFAILs:
...
XFAIL: gdb.threads/gcore-thread.exp: clear __stack_user.next
XFAIL: gdb.threads/gcore-thread.exp: clear stack_used.next
...

Apart from the xfail, the test-case also sets core0file to "":
...
        -re "No symbol \"${symbol}\" in current context\\.\r\n$gdb_prompt $" {
            xfail $test
            # Do not do the verification.
            set core0file ""
        }
...

After which we run into this FAIL, because gdb_core_cmd fails to load a
core file called "":
...
(gdb) core ^M
No core file now.^M
(gdb) FAIL: gdb.threads/gcore-thread.exp: core0file: \
  re-load generated corefile
...

Fix this FAIL by skipping gdb_core_cmd if the core file is "".

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2021-04-06  Tom de Vries  <tdevries@suse.de>

	PR testsuite/27691
	* gdb.threads/gcore-thread.exp: Don't call gdb_core_cmd with core
	file "".
2021-04-06 10:40:11 +02:00
bfd Automatic date update in version.in 2021-04-06 00:00:15 +00:00
binutils C99 binutils configury 2021-04-05 15:30:22 +09:30
config GCC_CET_HOST_FLAGS: Check if host supports multi-byte NOPs 2021-03-18 08:02:46 -07:00
contrib
cpu Use bool in opcodes 2021-03-31 10:49:23 +10:30
elfcpp Add DWARF 5 support in gold. 2021-03-19 13:55:35 -07:00
etc Update year range in copyright notice of binutils files 2021-01-01 10:31:05 +10:30
gas C99 gas configury 2021-04-05 15:31:25 +09:30
gdb [gdb/testsuite] Fix xfail handling in gdb.threads/gcore-thread.exp 2021-04-06 10:40:11 +02:00
gdbserver Fix inverted logic bug 2021-03-30 09:23:11 -03:00
gdbsupport New memory-tag commands 2021-03-24 14:57:53 -03:00
gnulib gnulib: import gitlog-to-changelog 2021-03-24 19:35:40 -04:00
gold PR27625, powerpc64 gold __tls_get_addr calls 2021-03-30 13:38:41 +10:30
gprof C99 gprof configury 2021-04-05 15:27:02 +09:30
include Remove strneq macro and use startswith. 2021-04-01 15:00:56 +02:00
intl intl: turn LIBINTL into -L / -l form 2021-02-10 15:26:57 +00:00
ld C99 ld configury 2021-04-05 15:31:53 +09:30
libctf libctf: fix ELF-in-BFD checks in the presence of ASAN 2021-03-25 16:32:51 +00:00
libdecnumber
libiberty GCC_CET_HOST_FLAGS: Check if host supports multi-byte NOPs 2021-03-18 08:02:46 -07:00
opcodes C99 opcodes configury 2021-04-05 15:28:04 +09:30
readline Fix Readline 8.1 build on mingw 2021-03-02 13:42:37 -07:00
sim Adjust location of readline in sim/erc32 2021-04-05 06:53:35 -06:00
texinfo
zlib GCC: Check if AR works with --plugin and rc 2021-01-11 16:26:51 -08:00
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.gitignore Add gnu global outputs to .gitignore 2020-12-02 10:00:27 -05:00
ar-lib
ChangeLog Add install dependencies for ld -> bfd and libctf -> bfd 2021-03-18 12:40:40 +00:00
compile
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config.sub config.sub update broke powerpc-eabivle 2021-01-07 08:56:28 +10:30
configure Remove arm-symbianelf 2021-02-09 23:36:16 +10:30
configure.ac Remove arm-symbianelf 2021-02-09 23:36:16 +10:30
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lt~obsolete.m4
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Makefile.def Add install dependencies for ld -> bfd and libctf -> bfd 2021-03-18 12:40:40 +00:00
Makefile.in Add install dependencies for ld -> bfd and libctf -> bfd 2021-03-18 12:40:40 +00:00
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src-release.sh src-release: fix indentation 2021-01-12 18:19:20 -05:00
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		   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.