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[gdb/testsuite] Reset errcnt in clean_restart 

When running test-case gdb.base/readnever.exp without commit 96038148d0
"[gdb/testsuite] Skip gdb.base/readnever.exp with target board readnow", we
run into an error:
...
ERROR: (eof) GDB never initialized.
testcase gdb/testsuite/gdb.base/readnever.exp completed in 0 seconds
...

If we additionally run test-case gdb.base/realname-expand.exp, we get an
unresolved for the first test:
...
UNRESOLVED: gdb.base/realname-expand.exp: set basenames-may-differ on
...

Using -v we find out that the UNRESOLVED is due the error triggered in the
previous test-case:
...
(gdb) set basenames-may-differ on^M
(gdb) Error/Warning threshold exceeded:  1 0 (max. 1 3)
UNRESOLVED: gdb.base/realname-expand.exp: set basenames-may-differ on
...

So, the error count of one test spills into the next test, even though we do a
clean restart.  That seems like a bad idea.

Fix this by resetting errcnt (as well as warncnt) in clean_restart, such that
we have:
...
Running src/gdb/testsuite/gdb.base/readnever.exp ...
ERROR: (eof) GDB never initialized.
Running src/gdb/testsuite/gdb.base/realname-expand.exp ...
PASS: gdb.base/realname-expand.exp: set basenames-may-differ on
...

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2020-04-24  Tom de Vries  <tdevries@suse.de>

	* lib/gdb.exp (clean_restart): Reset errcnt and warncnt.
This commit is contained in:
Tom de Vries 2020-04-24 16:21:30 +02:00
parent 7be2bb4f47
commit 86e887ae11
2 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2020-04-24 Tom de Vries <tdevries@suse.de>
* lib/gdb.exp (clean_restart): Reset errcnt and warncnt.
2020-04-24 Tom de Vries <tdevries@suse.de>
* gdb.dwarf2/dwzbuildid.exp: Add quiet to dwzbuildid-mismatch compile

8
gdb/testsuite/lib/gdb.exp
View File

@ -6108,6 +6108,7 @@ proc clean_restart { args } {
global srcdir
global subdir
global errcnt
global warncnt
if { [llength $args] > 1 } {
error "bad number of args: [llength $args]"
@ -6115,15 +6116,18 @@ proc clean_restart { args } {
gdb_exit
# This is a clean restart, so reset error and warning count.
set errcnt 0
set warncnt 0
# We'd like to do:
# if { [gdb_start] == -1 } {
# return -1
# }
# but gdb_start is a ${tool}_start proc, which doesn't have a defined
# return value. So instead, we test for errcnt.
set saved_errcnt $errcnt
gdb_start
if { $errcnt > $saved_errcnt } {
if { $errcnt > 0 } {
return -1
}