Include PID info in test failures

Useful for correlating test failures to events in traces.

1 files changed, 5 insertions, 2 deletions

diff --git a/include/tests.h b/include/tests.h
index ed2b409..4ca21f8 100644
--- a/include/tests.h
+++ b/include/tests.h
@@ -7,8 +7,11 @@
 
 #define fail(fmt, args...)                                              \
         do {                                                            \
-                fprintf(stderr, "\n!! TEST FAILURE " fmt "\n   at %s:%d (%s)\n", \
-                        ## args, __FILE__, __LINE__, __FUNCTION__);     \
+                fprintf(stderr, "\n!! TEST FAILURE " fmt                \
+                        "\n   at %s:%d (%s)"                            \
+                        "\n   in task PID=%d\n",                        \
+                        ## args, __FILE__, __LINE__, __FUNCTION__,      \
+                        getpid());                                      \
                 fflush(stderr);                                         \
                 exit(200);                                              \
         } while (0)