Warn about unran tests under valgrind

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 6 insertions, 0 deletions

diff --git a/libsimple.c b/libsimple.c
index 731396d..24c5dd3 100644
--- a/libsimple.c
+++ b/libsimple.c
@@ -990,6 +990,12 @@ main(void)
 	tv2.tv_sec =  1, tv2.tv_usec = 0L;
 	assert(libsimple_cmptimeval(&tv1, &tv2) == -1);
 
+	if (!have_custom_malloc()) {
+		stderr_real = 1;
+		fprintf(stderr, "\nSome tests have not been ran because malloc(3) was not "
+		                "replaced, this is normal if running under valgrind(1).\n\n");
+	}
+
 	return 0;
 }