When running gdb.mi/mi-complete.exp in conjunction with:
...
$ stress -c $(($(cat /proc/cpuinfo | grep -c "^processor") + 1))
...
we get less than 50% full passes:
...
$ for n in $(seq 1 100); do \
make V=1 -O check \
'RUNTESTFLAGS=gdb.mi/mi-complete.exp --target_board=unix'; \
done 2>&1 \
| grep "expected passes" | sort | uniq -c
45 # of expected passes 7
9 # of expected passes 8
46 # of expected passes 9
...
A diff between a passing and failing gdb.log shows this difference:
...
-&"set max-completions 1\n"
2-complete br
+&"set max-completions 1\n"
...
The problem is that the test-case issues the "set max-completion <n>" command,
and without waiting for the output issues a next command, and tries to parse
the results of both commands, expecting a specific interleaving of the various
output streams.
Fix the FAIL by waiting for the result of the "set max-completion <n>" command
before issuing another command.
Tested on x86_64-linux.
gdb/testsuite/ChangeLog:
2019-07-23 Tom de Vries <tdevries@suse.de>
PR testsuite/24711
* gdb.mi/mi-complete.exp: Wait for "set max-completions" result before
issuing next command.
+2019-07-23 Tom de Vries <tdevries@suse.de>
+
+ PR testsuite/24711
+ * gdb.mi/mi-complete.exp: Wait for "set max-completions" result before
+ issuing next command.
+
2019-07-22 Andrew Burgess <andrew.burgess@embecosm.com>
* gdb.ada/info_auto_lang.exp: Update expected results.
2019-07-22 Andrew Burgess <andrew.burgess@embecosm.com>
* gdb.ada/info_auto_lang.exp: Update expected results.
# Limit max completions and check that max_completions_reached=\"0\" is set
# to 1.
# Limit max completions and check that max_completions_reached=\"0\" is set
# to 1.
-send_gdb "set max-completions 1\n"
+mi_gdb_test "set max-completions 1" ".*=cmd-param-changed.*\\^done" \
+ "set max-completions 1"
mi_gdb_test "2-complete br" \
".*2\\^done,completion=\"br\[A-Za-z0-9-\]+\",matches=\\\[\"br\[A-Za-z0-9-\]+\"\\\],max_completions_reached=\"1\"" \
"-complete br, max-completions 1"
# Disable completions and check an error is returned
mi_gdb_test "2-complete br" \
".*2\\^done,completion=\"br\[A-Za-z0-9-\]+\",matches=\\\[\"br\[A-Za-z0-9-\]+\"\\\],max_completions_reached=\"1\"" \
"-complete br, max-completions 1"
# Disable completions and check an error is returned
-send_gdb "set max-completions 0\n"
+mi_gdb_test "set max-completions 0" ".*=cmd-param-changed.*\\^done" \
+ "set max-completions 0"
mi_gdb_test "3-complete br" \
".*3\\^error,msg=\".*" \
mi_gdb_test "3-complete br" \
".*3\\^error,msg=\".*" \