diff options
| author | Thomas Huth <thuth@redhat.com> | 2018-02-16 07:12:44 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-02-16 10:15:48 +0000 |
| commit | 5e5432b766c424a5d1e1b81315ce6ac1dc0fa3ed (patch) | |
| tree | 18ec69293ab61c136ec88941af5256b667305951 /tests/boot-serial-test.c | |
| parent | cc5a0ae03e0d011521ca5b32d3995a299b6b3ad3 (diff) | |
| download | qemu-5e5432b766c424a5d1e1b81315ce6ac1dc0fa3ed.zip | |
tests/boot-serial-test: Fix problem with timeout due to dropped characters
Commit 92b540dac9fc3a5 introduce a counter to handle the timeouts in a
better way. But in case ccnt reaches 512, the current read character is
ignored - and if that character is part of the string that we are looking
for, the test fails to match the string.
Almost all of the tests look for a string within the first 512 bytes of
firmware output, so the problem never triggered there. But the hppa test
that has been added recently looks for a longer string at the very end of
a long output, thus there's a chance that we miss a character there so
that the test fails unexpectedly. Fix it by *not* reading and dropping a
character if the counter reaches 512.
Fixes: 92b540dac9fc3a572c7342edd0b073000f5a6abf
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1518761564-9899-1-git-send-email-thuth@redhat.com
[PMM: added initializer for nbd to silence false-positive warning
from OpenBSD 6 compiler]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'tests/boot-serial-test.c')
| -rw-r--r-- | tests/boot-serial-test.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tests/boot-serial-test.c b/tests/boot-serial-test.c index 511bf314a3..ece25c694f 100644 --- a/tests/boot-serial-test.c +++ b/tests/boot-serial-test.c @@ -111,13 +111,13 @@ static testdef_t tests[] = { static void check_guest_output(const testdef_t *test, int fd) { bool output_ok = false; - int i, nbr, pos = 0, ccnt; + int i, nbr = 0, pos = 0, ccnt; char ch; /* Poll serial output... Wait at most 60 seconds */ for (i = 0; i < 6000; ++i) { ccnt = 0; - while ((nbr = read(fd, &ch, 1)) == 1 && ccnt++ < 512) { + while (ccnt++ < 512 && (nbr = read(fd, &ch, 1)) == 1) { if (ch == test->expect[pos]) { pos += 1; if (test->expect[pos] == '\0') { |