mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-03 04:12:10 +08:00
5a122fbc30
I noticed that we sometimes get this: (gdb) print &__jit_debug_descriptor $1 = (struct jit_descriptor *) 0x601040 <__jit_debug_descriptor> (gdb) PASS: gdb.base/jit-simple.exp: blah 1 [...] (gdb) run [...] Starting program: build/gdb/testsuite/outputs/gdb.base/jit-simple/jit-simple Unsupported JIT protocol version 4 in descriptor (expected 1) Breakpoint 2, main () at src/gdb/testsuite/gdb.base/jit-simple.c:36 36 return 0; (gdb) print &__jit_debug_descriptor $2 = (struct jit_descriptor *) 0x601040 <__jit_debug_descriptor> (gdb) PASS: gdb.base/jit-simple.exp: blah 1 All tests PASSed, but note the "Unsupported JIT protocol version 4" message. Also notice that "__jit_debug_descriptor" has the same address before and after the rerun, while the test is built in a way that should make that address change between runs. The test doesn't catch any of this because it doesn't compare before/after addresses. And then notice the "blah 1" test messages. "blah" is clearly a WIP message, but it should be at least "blah 2" the second time. :-) The reason this sometimes happens is that the test recompiles the program and expects gdb to reload it automaticallyt on "run". However, if the original program and the new recompilation happen to be in the same second, then gdb does not realize that the binary needs to be reloaded. (This is an old problem out of scope of this series.) If that happens, then GDB ends up using the wrong symbols for the program that it spawns, reads the JIT descriptor out of the wrong address, finds garbage, and prints that "unsupported version" notice. Fix that in the same way gdb.base/reread.exp handles it -- by sleeping one second before recompiling. gdb/testsuite/ChangeLog: 2016-10-06 Pedro Alves <palves@redhat.com> * gdb.base/jit-simple.exp (top level) Delete get_compiler_info call. (jit_run): Delete. (jit_test_reread): Use with_test_prefix. Reload the main binary explicitly. Compare the before/after addresses of the JIT descriptor. |
||
---|---|---|
bfd | ||
binutils | ||
config | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
.cvsignore | ||
.gitattributes | ||
.gitignore | ||
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 | ||
README | ||
README-maintainer-mode | ||
setup.com | ||
src-release.sh | ||
symlink-tree | ||
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.