Turns out it goes to stdout which is suppressed even with V=1.
Force DIFF output to stderr to make it visible.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
tests/qtest/bios-tables-test.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
index 9c3c4680e4..1aed0ee7df 100644
--- a/tests/qtest/bios-tables-test.c
+++ b/tests/qtest/bios-tables-test.c
@@ -463,13 +463,19 @@ static void test_acpi_asl(test_data *data)
"Actual [asl:%s, aml:%s], Expected [asl:%s, aml:%s].\n",
exp_sdt->aml, sdt->asl_file, sdt->aml_file,
exp_sdt->asl_file, exp_sdt->aml_file);
+ fflush(stderr);
if (getenv("V")) {
const char *diff_cmd = getenv("DIFF");
if (diff_cmd) {
- int ret G_GNUC_UNUSED;
char *diff = g_strdup_printf("%s %s %s", diff_cmd,
exp_sdt->asl_file, sdt->asl_file);
+ int out = dup(STDOUT_FILENO);
+ int ret G_GNUC_UNUSED;
+
+ dup2(STDERR_FILENO, STDOUT_FILENO);
ret = system(diff) ;
+ dup2(out, STDOUT_FILENO);
+ close(out);
g_free(diff);
} else {
fprintf(stderr, "acpi-test: Warning. not showing "
--
MST