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Tom de Vries 4c35c4c6a7 [gdb/server] Emit warning for SIGINT failure
Consider the executable from test-case gdb.base/interrupt-daemon.exp.

When starting it using gdbserver:
...
$ ./build/gdbserver/gdbserver localhost:2345 \
  ./outputs/gdb.base/interrupt-daemon/interrupt-daemon
...
and connecting to it using gdb:
...
$ gdb -q -ex "target remote localhost:2345" \
    -ex "set follow-fork-mode child" \
    -ex "break daemon_main" -ex cont
...
we are setup to do the same as in the test-case: interrupt a running inferior
using ^C.

So let's try:
...
(gdb) continue
Continuing.
^C
...
After pressing ^C, nothing happens.  This a known problem, filed as
PR remote/18772.

The problem is that in linux_process_target::request_interrupt, a kill is used
to send a SIGINT, but it fails.  And it fails silently.

Make the failure verbose by adding a warning, such that the gdbserver output
becomes more helpful:
...
Process interrupt-daemon created; pid = 15068
Listening on port 2345
Remote debugging from host ::1, port 35148
Detaching from process 15068
Detaching from process 15085
gdbserver: Sending SIGINT to process group of pid 15068 failed: \
  No such process
...

Note that the failure can easily be reproduced using the test-case and target
board native-gdbserver:
...
(gdb) continue^M
Continuing.^M
PASS: gdb.base/interrupt-daemon.exp: fg: continue
^CFAIL: gdb.base/interrupt-daemon.exp: fg: ctrl-c stops process (timeout)
...
as reported in PR server/23382.

Tested on x86_64-linux.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
2022-11-27 10:31:50 +01:00
bfd Automatic date update in version.in 2022-11-27 00:00:30 +00:00
binutils Revert "readelf: Do not require EI_OSABI for IFUNC." 2022-11-25 14:00:26 +01:00
config libsframe: add the SFrame library 2022-11-15 15:24:29 -08:00
contrib
cpu
elfcpp gold, dwp: support zstd compressed input debug sections [PR 29641] 2022-11-10 21:42:14 -08:00
etc
gas riscv: Add AIA extension support (Smaia, Ssaia) 2022-11-25 10:00:06 +08:00
gdb [gdb/testsuite] Don't generate core in gdb.base/bt-on-fatal-signal.exp 2022-11-26 14:29:10 +01:00
gdbserver [gdb/server] Emit warning for SIGINT failure 2022-11-27 10:31:50 +01:00
gdbsupport gdb: new $_inferior_thread_count convenience variable 2022-11-17 14:49:41 +00:00
gnulib [PR build/29791] gnulib: Disable _GL_ATTRIBUTE_DEALLOC on Solaris 2022-11-20 14:55:52 +01:00
gold Re: gold: add --compress-debug-sections=zstd [PR 29641] 2022-11-11 18:05:36 +10:30
gprof Updated Hungarian translation for the gprof sub-directory. 2022-10-21 10:55:57 +01:00
gprofng PR29788, gprofng cannot display Java's generated assembly code 2022-11-16 08:54:19 -08:00
include riscv: Add AIA extension support (Smaia, Ssaia) 2022-11-25 10:00:06 +08:00
intl
ld ld: Add section contributions substream to PDB files 2022-11-23 01:13:35 +00:00
libbacktrace
libctf libctf: use libtool for link test in configure 2022-11-11 22:01:25 -08:00
libdecnumber
libiberty Impport libiberty commit: 885b6660c17f from gcc mainline. Fix gas's acinclude.m4 to stop a potwntial configure time warning message. 2022-11-24 12:31:46 +00:00
libsframe sframe/doc: remove usage of xrefautomaticsectiontitle 2022-11-24 10:14:08 -08:00
opcodes x86: widen applicability and use of CheckRegSize 2022-11-24 09:35:51 +01:00
readline
sim sim: pru: Fix behaviour when loop count is zero 2022-11-12 15:10:07 +02:00
texinfo
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compile
config-ml.in
config.guess
config.rpath
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configure libsframe: add the SFrame library 2022-11-15 15:24:29 -08:00
configure.ac libsframe: add the SFrame library 2022-11-15 15:24:29 -08:00
COPYING
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MAINTAINERS
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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
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	./configure 
	make

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then do:
	make install

(If the configure script can't determine your type of computer, give it
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	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

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