[Qemu-devel] [PATCH] tests: report errors when iasl exits with non-zero status

["Daniel P. Berrange" <berrange@redhat.com>]

If iasl exits with non-zero status, the test unhelpfully just reports
that the AML did not match, because the data files it thought iasl
generated do not exist. This adds an explicit check for the exit status
of iasl and prints stderr if it was non-zero. Thus gives us a fighting
chance of diagnosing why iasl failed.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
---
 tests/bios-tables-test.c | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
index 564da45f65..ee441f1e17 100644
--- a/tests/bios-tables-test.c
+++ b/tests/bios-tables-test.c
@@ -304,6 +304,7 @@ static bool load_asl(GArray *sdts, AcpiSdtTable *sdt)
     gchar *out, *out_err;
     gboolean ret;
     int i;
+    int status;
 
     fd = g_file_open_tmp("asl-XXXXXX.dsl", &sdt->asl_file, &error);
     g_assert_no_error(error);
@@ -324,14 +325,25 @@ static bool load_asl(GArray *sdts, AcpiSdtTable *sdt)
     g_string_append_printf(command_line, "-d %s", sdt->aml_file);
 
     /* pass 'out' and 'out_err' in order to be redirected */
-    ret = g_spawn_command_line_sync(command_line->str, &out, &out_err, NULL, &error);
+    ret = g_spawn_command_line_sync(command_line->str, &out, &out_err, &status, &error);
     g_assert_no_error(error);
     if (ret) {
-        ret = g_file_get_contents(sdt->asl_file, (gchar **)&sdt->asl,
-                                  &sdt->asl_len, &error);
-        g_assert(ret);
-        g_assert_no_error(error);
-        ret = (sdt->asl_len > 0);
+        if (status != 0) {
+            g_printerr("'%s' exited with status %d", command_line->str, status);
+            if (!g_str_equal(out, "")) {
+                g_printerr("%s", out);
+            }
+            if (!g_str_equal(out_err, "")) {
+                g_printerr("%s", out_err);
+            }
+            ret = FALSE;
+        } else {
+            ret = g_file_get_contents(sdt->asl_file, (gchar **)&sdt->asl,
+                                      &sdt->asl_len, &error);
+            g_assert(ret);
+            g_assert_no_error(error);
+            ret = (sdt->asl_len > 0);
+        }
     }
 
     g_free(out);
-- 
2.13.6