mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
0f575925b6
When running libsegfault.exp with check-read1, I get:
...
Running gdb/testsuite/gdb.base/libsegfault.exp ...
ERROR: tcl error sourcing gdb/testsuite/gdb.base/libsegfault.exp.
ERROR: no such variable
(read trace on "env(LD_PRELOAD)")
invoked from within
"set env(LD_PRELOAD)"
("uplevel" body line 1)
invoked from within
"uplevel 1 [list set $var]"
invoked from within
"if [uplevel 1 [list array exists $var]] {
set saved_arrays($var) [uplevel 1 [list array get $var]]
} else {
set saved_scalars($var) [uplevel ..."
invoked from within
"if [uplevel 1 [list info exists $var]] {
if [uplevel 1 [list array exists $var]] {
set saved_arrays($var) [uplevel 1 [list array get $var]]
..."
(procedure "save_vars" line 11)
invoked from within
"save_vars { env(LD_PRELOAD) } {
if { ![info exists env(LD_PRELOAD) ]
|| $env(LD_PRELOAD) == "" } {
set env(LD_PRELOAD) "$lib"
} else {
..."
(procedure "gdb_spawn_with_ld_preload" line 4)
invoked from within
"gdb_spawn_with_ld_preload $libsegfault """
...
There are several things here interacting with environment variable
LD_PRELOAD:
- the expect "binary" build/gdb/testsuite/expect-read1 with does
export LD_PRELOAD=build/gdb/testsuite/read1.so before calling native expect
- read1.so which does unsetenv ("LD_PRELOAD") upon first call to read
- the test-case, which wants to set or append libSegFault.so to LD_PRELOAD
The error occurs when accessing $env(LD_PRELOAD), in a branch where
"info exists env(LD_PRELOAD)" returns true. AFAIU, this is
https://core.tcl-lang.org/tcl/tktview?name=67fd4f973a "incorrect results of
'info exists' when unset env var in one interp and check for existence from
another interp".
Work around the tcl bug by not unsetting the variable, but setting it to ""
instead:
...
- unsetenv ("LD_PRELOAD");
+ setenv ("LD_PRELOAD", "", 1);
...
Verified that reverting commit
|
||
---|---|---|
bfd | ||
binutils | ||
config | ||
contrib | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gnulib | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libctf | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
.cvsignore | ||
.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.