I've been attempting to debug an issue with a dg-based testsuite for a
new gcc feature I'm working on:
https://gcc.gnu.org/wiki/JIT
but am somewhat stumped.
I'm getting a tcl traceback (see attached jit.log) when running gcc's
"make check", but not "make check-jit": it runs OK when invoking just
the latter. I can also trigger the traceback by running:
make check-gcc check-jit -j64
but not just:
make check-jit -j64
If I run them in separate terminals:
T1: make check-gcc -j64
T2: make check-jit -j64
then "make check-jit" succeeds.
As I understand it, the makefile is kicking off multiple "runtest --tool
TOOL" invocations, with different values of TOOL, all sharing the same
ultimate stdout/stderr, AIUI - so presumably all that's different is the
load on the system, and perhaps significantly, the stdout/stderr being
shared by the two invocations.
By adding lines of the form
'pass "got here 001"'
to try to isolate the problem, the problem seems to relate to line 116
below in dejagnu.exp's host_execute:
107 proc host_execute {args} {
108 global text
109
110 set timeoutmsg "Timed out: Never got started, "
111 set timeout 100
112 set file all
113 set timetol 0
114 set arguments ""
115
>>>116 expect_before buffer_full { perror "Buffer full" }
117
which seems to have been in dejagnu.exp since the earliest version in
git (from 2001):
http://git.savannah.gnu.org/gitweb/?p=dejagnu.git;a=commitdiff;h=ad5950c28155a9583b19cff68d3e7546d126c5f2
Taking it out fixes the problem.
Interestingly, in the log attached, the problem seems to reliably occur
the *second* time this line is reached; the "pass" messages indicate
that the first time host_execute is called, execution makes it all the
way through to returning from host_execute and back to my jit.exp.
I've been digging through the source to expect, and I note that
expect.c:parse_expect_args has "full_buffer", rather than "buffer_full":
577 /*
578 * We have a pattern or keyword.
579 */
580
581 static char *keywords[] = {
>>>582 "timeout", "eof", "full_buffer", "default", "null",
583 (char *)NULL
584 };
585 enum keywords {
586 EXP_ARG_TIMEOUT, EXP_ARG_EOF, EXP_ARG_FULL_BUFFER,
587 EXP_ARG_DEFAULT, EXP_ARG_NULL
588 };
which makes me wonder if this code has ever worked as intended, or if
I'm misreading things.
Any hints as to what might trigger the traceback, or how to debug
further? (e.g. how to get the full error message back)
(I'm a relative newcomer to tcl, expect, and dejagnu).
Am attaching full "jit.log".
My jit.exp can be seen at:
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/testsuite/jit.dg/jit.exp;h=4672063b00313d3195e88e23fdc591ad63110ee7;hb=refs/heads/dmalcolm/jit
This is with:
expect-5.45-10.fc20.x86_64
dejagnu-1.5.1-3.fc20.noarch
tcl-8.5.14-1.fc20.x86_64
on a Fedora 20 box.
Thanks
Dave
Test Run By david on Thu Oct 9 14:45:40 2014
Native configuration is x86_64-unknown-linux-gnu
=== jit tests ===
Schedule of variations:
unix
Running target unix
Using /usr/share/dejagnu/baseboards/unix.exp as board description file for target.
Using /usr/share/dejagnu/config/unix.exp as generic interface file for target.
Using /home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/config/default.exp as tool-and-target-specific interface file.
Running /home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/jit.dg/jit.exp ...
Executing on host: /home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/xgcc -B/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/ /home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit/docs/examples/install-hello-world.c -fno-diagnostics-show-caret -fdiagnostics-color=never -I/home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit -lgccjit -g -Wall -Werror -Wl,--export-dynamic -o install-hello-world.exe (timeout = 300)
spawn -ignore SIGHUP /home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/xgcc -B/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/ /home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit/docs/examples/install-hello-world.c -fno-diagnostics-show-caret -fdiagnostics-color=never -I/home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit -lgccjit -g -Wall -Werror -Wl,--export-dynamic -o install-hello-world.exe
PASS: /home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit/docs/examples/install-hello-world.c, initial compilation
LD_LIBRARY_PATH=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:
LD_RUN_PATH=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../
SHLIB_PATH=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../
LD_LIBRARY_PATH_32=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:
LD_LIBRARY_PATH_64=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:
DYLD_LIBRARY_PATH=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../
PASS: got here jit.exp:001
PASS: output_file is install-hello-world.exe
PASS: got here jit.exp:002 (about to call host_execute)
PASS: got here dejagnu.exp:host_execute: 001
PASS: got here dejagnu.exp:host_execute: about to reach expect_before buffer_full
PASS: got here dejagnu.exp:host_execute: after expect_before buffer_full
PASS: got here dejagnu.exp:host_execute: 004
PASS: got here dejagnu.exp:host_execute: about to spawn
PASS: got here dejagnu.exp:host_execute: about to parse child output
PASS: got here dejagnu.exp:host_execute: 005
PASS: got here dejagnu.exp:host_execute: about to return
PASS: got here
PASS: ../jit/docs/examples/install-hello-world.c (test for excess errors)
Executing on host: /home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/xgcc -B/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/ /home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit/docs/examples/tut01-square.c -fno-diagnostics-show-caret -fdiagnostics-color=never -I/home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit -lgccjit -g -Wall -Werror -Wl,--export-dynamic -o tut01-square.exe (timeout = 300)
spawn -ignore SIGHUP /home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/xgcc -B/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/ /home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit/docs/examples/tut01-square.c -fno-diagnostics-show-caret -fdiagnostics-color=never -I/home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit -lgccjit -g -Wall -Werror -Wl,--export-dynamic -o tut01-square.exe
PASS: /home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/../jit/docs/examples/tut01-square.c, initial compilation
LD_LIBRARY_PATH=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:
LD_RUN_PATH=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../
SHLIB_PATH=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../
LD_LIBRARY_PATH_32=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:
LD_LIBRARY_PATH_64=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:/home/david/coding/gcc-python/gcc-build-new-cloog/dep-prefix/lib:
DYLD_LIBRARY_PATH=/home/david/coding-3/gcc-build-jit/test/experiment/x86_64-unknown-linux-gnu/build/gcc/testsuite/jit/../../
PASS: got here jit.exp:001
PASS: output_file is tut01-square.exe
PASS: got here jit.exp:002 (about to call host_execute)
PASS: got here dejagnu.exp:host_execute: 001
PASS: got here dejagnu.exp:host_execute: about to reach expect_before buffer_full
ERROR: tcl error sourcing /home/david/coding-3/gcc-build-jit/test/experiment/src/gcc/testsuite/jit.dg/jit.exp.
send: spawn id exp0 not open
while executing
"send_user "$message\n""
("default" arm line 2)
invoked from within
"switch -glob "$firstword" {
"PASS:" -
"XFAIL:" -
"KFAIL:" -
"UNRESOLVED:" -
"UNSUPPORTED:" -
"UNTESTED:" {
if {$all_flag} {
send_user "$m..."
(procedure "clone_output" line 10)
invoked from within
"clone_output "ERROR: tcl error sourcing $test_file_name.""
(procedure "runtest" line 34)
invoked from within
"runtest $test_name"
("foreach" body line 42)
invoked from within
"foreach test_name [lsort [find ${dir} *.exp]] {
if { ${test_name} == "" } {
continue
}
# Ignore this one if asked to.
if { ${ignore..."
("foreach" body line 54)
invoked from within
"foreach dir "${test_top_dirs}" {
if { ${dir} != ${srcdir} } {
# Ignore this directory if is a directory to be
# ignored.
if {[info..."
("foreach" body line 121)
invoked from within
"foreach pass $multipass {
# multipass_name is set for `record_test' to use (see framework.exp).
if { [lindex $pass 0] != "" } {
set multipass_..."
("foreach" body line 51)
invoked from within
"foreach current_target $target_list {
verbose "target is $current_target"
set current_target_name $current_target
set tlist [split $curren..."
(file "/usr/share/dejagnu/runtest.exp" line 1623)
_______________________________________________
DejaGnu mailing list
DejaGnu@gnu.org
https://lists.gnu.org/mailman/listinfo/dejagnu
