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Occasionally, I run into: ... (gdb) PASS: gdb.threads/schedlock.exp: schedlock=on: cmd=continue: \ set scheduler-locking on continue^M Continuing.^M PASS: gdb.threads/schedlock.exp: schedlock=on: cmd=continue: \ continue (with lock) [Thread 0x7ffff746e700 (LWP 1339) exited]^M No unwaited-for children left.^M (gdb) Quit^M (gdb) FAIL: gdb.threads/schedlock.exp: schedlock=on: cmd=continue: \ stop all threads (with lock) (timeout) ... What happens is that this loop which is supposed to run "just short of forever": ... /* Don't run forever. Run just short of it :) */ while (*myp > 0) { /* schedlock.exp: main loop. */ MAYBE_CALL_SOME_FUNCTION(); (*myp) ++; } ... finishes after 0x7fffffff iterations (when a signed wrap occurs), which on my system takes only about 1.5 seconds. Fix this by: - changing the pointed-at type of myp from signed to unsigned, which makes the wrap defined behaviour (and which also make the loop run twice as long, which is already enough to make it impossible for me to reproduce the FAIL. But let's try to solve this more structurally). - changing the pointed-at type of myp from int to long long, making the wrap unlikely. - making sure the loop runs forever, by setting the loop condition to 1. - making sure the loop still contains different lines (as far as debug info is concerned) by incrementing a volatile counter in the loop. - making sure the program doesn't run forever in case of trouble, by adding an "alarm (30)". Tested on x86_64-linux. PR testsuite/30074 Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=30074 |
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bfd | ||
binutils | ||
config | ||
contrib | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gdbserver | ||
gdbsupport | ||
gnulib | ||
gold | ||
gprof | ||
gprofng | ||
include | ||
intl | ||
ld | ||
libbacktrace | ||
libctf | ||
libdecnumber | ||
libiberty | ||
libsframe | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
.cvsignore | ||
.editorconfig | ||
.gitattributes | ||
.gitignore | ||
ar-lib | ||
ChangeLog | ||
compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
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 | ||
Makefile.def | ||
Makefile.in | ||
Makefile.tpl | ||
makefile.vms | ||
missing | ||
mkdep | ||
mkinstalldirs | ||
move-if-change | ||
multilib.am | ||
README | ||
README-maintainer-mode | ||
setup.com | ||
src-release.sh | ||
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.