tests/strace-S.test: enhance error diagnostics

* tests/strace-S.test: If strace output does not meet expectations,
print the output.

diff --git a/tests/strace-S.test b/tests/strace-S.test
index 0ffec3037c917af6d48b3d0b8886177d60df675b..c0e954989be1e3323b365d36f9a6383bf789826c 100755 (executable)
--- a/tests/strace-S.test
+++ b/tests/strace-S.test
@@ -18,8 +18,11 @@ test_c()
 
        [ -s "$OUT" ] ||
                fail_ "$STRACE $args output mismatch"
-       LC_ALL=C sort -c $sortopts "$OUT" ||
+       LC_ALL=C sort -c $sortopts "$OUT" || {
+               echo 'Actual output:'
+               cat < "$LOG"
                fail_ "$STRACE $args output not sorted properly"
+       }
 }
 
 c='[[:space:]]\+\([^[:space:]]\+\)'