Dominique Pellé <dominique.pe...@gmail.com> wrote:

> Christian Brabandt <cbli...@256bit.org> wrote:
>
>> On Mo, 30 Okt 2017, James McCoy wrote:
>>
>>> I recently uploaded 8.0.1226 to Debian and nearly every build failed[0].
>>> The most common failure is
>>>
>>>     Found errors in Test_popup_and_window_resize():
>>>     function RunTheTest[34]..Test_popup_and_window_resize line 16: Pattern 
>>> '^!\\s*$' does not match ''
>>>     function RunTheTest[34]..Test_popup_and_window_resize line 26: Pattern 
>>> '^!\\s*$' does not match '~                                                 
>>>                               '
>>>     function RunTheTest[34]..Test_popup_and_window_resize line 28: Pattern 
>>> '^!\\s*$' does not match ''
>>>
>>> I investigated some and that test appears to be extremely flaky in those
>>> environments.  I haven't had a failure yet locally (amd64 system), but
>>> those architectures fail almost every run.
>>>
>>> Attached is a log from that test and the associated diff showing where I
>>> added ch_log() calls.
>>>
>>> [0]: 
>>> https://buildd.debian.org/status/logs.php?pkg=vim&ver=2%3A8.0.1226-1&suite=sid
>>
>> Is it possible to run those tests interactively on those architectures?
>> Or does it succeed when run interactively and only fails when run in the
>> test suite?
>>
>>
>> Christian
>
> I've seen the same test failures on my Linux machine a few days ago.
> It happened several times in a row.
> Somehow it's not happening anymore. Note sure why.
> I'll try to reproduce it.
>
> Dominique


I can now reproduce the test failure 100% of the times
when Vim-8.0.1238 is configured with:

$ CC=gcc-7 ./configure --with-features=huge --enable-gui=none

and when building with asan i.e. with this change:

diff --git a/src/Makefile b/src/Makefile
index 0b95c6e..50c0fff 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -681,7 +681,7 @@ LINT_OPTIONS = -beprxzF
 # address sanitizer or with the undefined sanitizer.  Works with gcc and
 # clang.  May make Vim twice as slow.  Errors reported on stderr.
 # More at: https://code.google.com/p/address-sanitizer/
-#SANITIZER_CFLAGS = -g -O0 -fsanitize=address -fno-omit-frame-pointer
+SANITIZER_CFLAGS = -g -O0 -fsanitize=address -fno-omit-frame-pointer
 #SANITIZER_CFLAGS = -g -O0 -fsanitize=undefined -fno-omit-frame-pointer
 SANITIZER_LIBS = $(SANITIZER_CFLAGS)

Here is how it fails:

$ cd vim/src
$ make test_popup
...
Executed 20 tests
1 FAILED:
Found errors in Test_popup_and_window_resize():
function RunTheTest[34]..Test_popup_and_window_resize line 16: Pattern
'^!\\s*$' does not match ''
function RunTheTest[34]..Test_popup_and_window_resize line 26: Pattern
'^!\\s*$' does not match '~
                                                                     '
function RunTheTest[34]..Test_popup_and_window_resize line 28: Pattern
'^!\\s*$' does not match ''


Increasing the time to wait like this fixes it for me:

diff --git a/src/testdir/test_popup.vim b/src/testdir/test_popup.vim
index 1be4e6f..cedcd26 100644
--- a/src/testdir/test_popup.vim
+++ b/src/testdir/test_popup.vim
@@ -639,7 +639,7 @@ func Test_popup_and_window_resize()
   endif
   let g:buf = term_start([GetVimProg(), '--clean', '-c', 'set
noswapfile'], {'term_rows': h / 3})
   call term_sendkeys(g:buf, (h / 3 - 1)."o\<esc>")
-  call term_wait(g:buf, 200)
+  call term_wait(g:buf, 400)
   call term_sendkeys(g:buf, "Gi\<c-x>")
   call term_sendkeys(g:buf, "\<c-v>")
   call term_wait(g:buf, 100)

Regards
Dominique

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